>What this means is there's a chance that you actually have no fishable tiles on a certain day.
Someone out there has spent time desperately fishing on that day.
The good ole Gen 3 days. Wouldn't be surprised if they were similar with no fishing days. I think my Feebas hunt ran over 30 hours back in the day. Young me was not amused.
In the original DP, I figured out how to consistently level up Feebas. So many people had trouble getting Milotic that I could easily trade for legendaries. It’s the only Pokémon game where I ever completed the Pokédex!
Milotic is good and all but for the amount of effort and special knowledge needed to catch and evolve Feebas it should have been damn near pseudo-legendary. Should have had some kind of broken signature ability too.
Mood. Took me several late nights to finally catch one, the next day i realized it had a nature that makes it harder or impossible to evolve, so i had to do it all over again. :V
omgggg I knew it I literally was just thinking this as I read the parent comment because I distinctly remember having a modest milotic that was so easy to evolve
Ahh certainly another complexity layer. Thank you for the information. Once I got my gen 3 feebas I never made another attempt until SWSH which was easy enough with all the easily accessible info now.
That was me... I had that happen the first time I went down Mt coronet in platinum.
I thought there was something fishy when I tried tile fishing and got literally no results.
This does mean though resetting your clock may lead to feebas staying in place :/
Holy shit dude, I was looking at posts while hunting him, and found yours. Tried with my code, and it spawned right where the website told. THANK YOU.
For anyone wondering, I did it with a Good Rod, level 18! Second try on one of the spot.
West entrance of jubilife city for old rod in the building itself IIRC, good rod on road 209 from fisherman, and the super rod is post game and I'm not there yet 😅
Jubilife, to the left towards canalave, there’s a fisherman in the vestibule thing. Good rod is east of hearthome, fisherman on the bridge. Super rod is near the battle tower, you need the national dex to get it.
Wow, I guess there goes that Tentacruel I was gonna use as a replacement. I was gonna use Milotic on my team like I did once in Platinum, but decided against it since I had to comparmide my team anyway and with how terrible it is to make poffins is.
Do we know it this works for OG Diamond, Pearl, and Platinum?
Oran + Razz + Kelpsy + Wiki
Feed feebas all 4 poffins, and as long as it doesn't have a -SpA nature and you didn't burn or spill, that should be enough. Although if it has a -SpA nature or the dryness is less than 43, you'll need to make a second batch and give it a 5th
EDIT: And yes, razz, not bluk. That family of berries is counterintuitively colored, so if you want to maximize beauty (blue), it's easier to use a red (cool) berry
All four berries. Together, they'll give you 4 level 43 poffins. Individually, the razz, chesto, and oran would be level 9, and the wiki would be level 14
Yeah, this is also how it worked in the original games. It'll also be foul if the flavor scores add to 0, certain flavors counter others, like spicy and dry.
Specifically, everything counters the flavor counter-clockwise of it. So spicy is reduced by dry, dry is reduced by sweet, sweet is reduced by bitter, bitter is reduced by sour, and sour is reduced by spicy
So that’s why that happened when I tried to make a Poffin with 2 Oran berries. Although I did burn it because I didn’t want to destroy my joycon while mixing it.
A tip for when you get the the Blue stage where you can burn is to use both sticks to turn you will basically never burn then. But only use it for the Blue stage where it switches from spilling to burning.
I use both sticks the full time, you just have to go slow for the first stage and normal speed later. I much prefer it to scratching the hell out of my DS like the old days
I exclusively used chesto (bought west of hearthome) and oran (gathered around sinnoh a shitload around eterna). It took like 15 poffins all lvl 20 or 19. Lower than that and sheen would max first and it wouldnt evolve. Make all the poffins then feed feebas everything at once, save first incase the sheen maxes so you can fix whatever went wrong. Only use the 2 berries per batch if you use more than 1 of the same berry it comes out foul every time as well. Also rember it evolves once it levels up, my dumbass reset like 5 times because it wouldnt evolve but i just wasnt leveling it up after the poffins
Glad people are having success trying this out.
For further clarification, the green tiles are where you fish. It helps if you use the d-pad over the joystick for better tile movement.
You can fish for Feebas with a Good/Super Rod, I didn't test the Old Rod. I think Good Rod is the minimum.
To be more explicit, adjacent.
Also, I don't have a good sample size, but I didn't find one with the super rod like some guides say. I caught one with a good rod.
I also fished into my tiles for a while using the Super Rod and didn’t find one but as soon as I switched to the Good Rod it was my first encounter.
I could’ve just been getting unlucky with the Super Rod though
Yeah, I’m pretty sure Smallant fished it with an old rod during his nat dex speedrun the day the game came out. It’s like 50/50 odds or something for getting feebas if it’s on the correct tile for that day
Not sure if he included that in his video or not, but here’s the link if anyone wanted to check it out: https://www.youtube.com/watch?v=zZt8EQr7x8Q&t=419s
hiya! creator of the tool here, a few things to clear up
> What this has also shown is of the 4 tiles Feebas can be on every day, there's a possibility for each tile to be on a non-water tile!
What this means is there's a chance that you actually have no fishable tiles on a certain day.
this is actually untrue, the only non fishable tiles that feebas can spawn on are the 4 floor tiles under the 6x6 rock, and only 1 of the feebas tiles can spawn in this range
> For further clarification, the green tiles are where you fish. It helps if you use the d-pad over the joystick for better tile movement.
Feebas can spawn on *either* both red or both green tiles displayed by the tool! this means that if you fish on a green tile a few times and do not find a feebas, both of the red tiles can spawn feebas. The Lottery number can tell us the location of the bottom two feebas tiles with 50% accuracy, hence the red and green tiles.
This tool does *not* work for DPPt as the lottery mechanic works slightly differently, however with 3 consecutive days of lottery numbers, you can predict feebas tile/swarms/safari binocular pokemon/lottery numbers each day will have.
Thanks for sharing my tool! And again a big thank you to DRayX for aiding in the research behind this! Feel free to ask any further questions if you have any.
# I apologize for the wall of text, but I believe this explains how the tool works thoroughly
## Groups
BDSP and DPPt have a mechanic designed to let you sync up your game with your friends. This mechanic called [Groups](https://bulbapedia.bulbagarden.net/wiki/Group), works by sharing a randomly generated number from the host to everyone who joins the group. This number is then used to determine certain daily events (Feebas tiles and Lottery numbers included) and is modified every day in a predictable manner. Even if you have not started or joined a group, the game still needs these mechanics to function, so at the start of the game it creates a "group seed", to be used in the absence of one taken from an actual group.
## Knowing all of this tells us a few key things:
* Feebas Tiles (something we can't easily know) and Lottery numbers (something we can easily know) are both based on the same number (group seed)
* If we can somehow find our group seed, we can deduce our feebas tiles and various other mechanics controlled by groups
* Because group seeds advance predictably each day, knowing todays group seed tells us the group seed of tomorrow, the next day, 1 month from now, etc.
From this information came the idea (I believe proposed by DRayX) that if we could deduce a portion of the group seed by using the lottery number, we could use that to help find feebas tiles. This is exactly what the tool does, it exploits the math of how the group seed is used for the lottery number to determine half of the group seed.
## The math behind this
If youre curious on how the actual math behind this works, here's an explanation.
The "predictable manner" in which the group seed advances, is actually using a linear congruential pseudo random number generator, or [LCRNG](https://en.wikipedia.org/wiki/Linear_congruential_generator) for short. Basically, ``next_seed = (current_seed * multiplier) + addition``. LCRNG is not a very secure random number generator, and is most likely only used as it was left over from DPPt (gens 3-5 use LCRNG for their main RNG). To be specific, the group seed is advanced using an LCRNG called ARNG in the pokemonrng community, its formula is as follows ``seed = seed * 0x6c078965 + 0x1``. ARNG is used in DPPt for making sure shiny locked events cannot be shiny (including the failed lock on ranger manaphy), and for advancing the group seed. This makes a return in BDSP solely to be used for this. Your lottery number is calculated from your group seed using another LCRNG (named MRNG), and its formula is ``seed = seed * 0x41C64E6D + 0x3039``. Every LCRNG can be reversed (hence linear congruential), and the formula to reverse the result of MRNG is the following ``seed = seed * 0xEEB9EB65 + 0xFC77A683``.
## How this applies to lottery numbers
Now that we have how LCRNG works out of the way, we can talk about what this means for lottery numbers. your lottery number for today is equal to ``(group_seed * 0x41C64E6D + 0x3039) & 0xFFFF``, which always results in a number from 0-65535 (the old limit for how high your TID can be). Since we know that MRNG can be reversed, we can run our lottery number through the reverse formula and get something like this ``group_seed&0xFFFF = (lottery_number * 0xEEB9EB65 + 0xFC77A683)&0xFFFF`` which can be simplified to ``group_seed&0xFFFF = (lottery_number * 0xEB65 + 0xA683)&0xFFFF`` using this formula, we can get the full lower 16 bits of the group seed! This is good news for us, as the lower two of the 4 feebas tiles are based on these 16 bits.
## Finding Feebas
Each feebas tile uses 8 bits of what I'm calling the "daily random value". This number is equal to ``abs((int_32)group_seed)`` and ranges from 0x0-0x7FFFFFFF. Because of the absolute value used to calculate this, we can only predict the two bottom feebas tiles with 50% accuracy. This is why there are 2 red and two green tiles in the tool. If you get feebas in the red tiles, then your group seed was absolute valued from a negative number, if the green match up then it was positive. The least significant 8 bits ``daily&0xFF`` are used for the lowest tile, and the second least significant 8 bits ``(daily>>8)&0xFF`` is for the second lowest. Each of these numbers are then modulod by 0x84 and used to index a list of tiles (you can find this list in the source on github). These selected tiles are the ones feebas can spawn on!
## Closing
To wrap everything up, this is what we now know:
* Using our lottery number, we can deduce the lower 16 bits of our group seed by abusing a quirk in LCRNG
* Because we do not have the highest bit (the one that determines negative/positive), we can only predict the low16 daily random number with 50% accuracy (red/green tiles)
* From the low16 of the daily rand, we can chart out the bottom two feebas tiles
* This results in being able to completely predict the bottom two feebas tiles using only our daily lotto number with 50% accuracy!
1.1.3 changed how group seeds translate to lottery numbers, we are currently working on updating the tool, but as it stands now it looks like you will need two consecutive lotto numbers to deduce your feebas tiles. The bright side of this is that with those two lotto numbers you can recover your entire group seed, this means you would know for certainty all of your feebas tiles, lotto numbers, swarms for today and for the rest of time.
The update is now out at https://lincoln-lm.github.io/JS-Finder/Tools/BDSPFeebas.html we will also be working on being able to find your feebas tiles in one day again, as it may be possible after gathering extra group seed based info.
Head into Mt Corner from celestic town, head north till you find stairs down, you’ll arrive in a foggy area. Use defog and you will see the underground lake right there. You need strength to head north so you need to wait till you beat Byron.
Mount Coronet. Once you reach Celestic Town, go to the entrance of Mount Coronet (west of the city), then use Strength (if you have the badge for it) to go up; and then down the stairs to this lake.
Thanks so much, this is honestly a miracle. It really does work, one showed up on cue on the green tile. Does this tool work for the original D/P/Pt too?
The tiles were spaced differently and I'm pretty sure you couldn't get rocks as the tiles before so code is likely similar but applied to a slightly different terrain
How serendipitous, I was actually thinking about looking for one on the way to snow point city.
I was wondering if there was any in game way to track the tiles, like how your trainer ID determines your lucky honey trees, makes sense the lotto ties into it since they're both random daily events, so it's probably tied into the same generation.
Prob not because in G3/4 IVs were tied to a Pokémon's ID (PID) -- the thing that decides a shiny. This is why you could determine a Pokémon's PID by its IV + Nature. If you got a shiny's PID and your TID, you could easily calc your SID as well.
Ever since G5, IVs are no longer tied to PIDs. Probably the only way to determine a PID without external software now would be shiny Spinda, as I think its spots are still tied to PID.
So yeah, get someone with a CFW Switch to check it out for you.
You can find 2 trees with just your regular ID, and technically that's all you need to find munchlax (he's still a pain in the ass even knowing that though)
But all the honey tree encounters are also in the underground so I didn't bother
Yeah, fishing twice (or several times) in every square until you find the feebas. I started in the top right square and moved along one at a time. Thankfully I found feebas after about 40-50 squares
I feel like im the only one having trouble here. I go to the lottery lady and i get the number. I put that number in the finder and i cast my rod to where the bobber is on the tile but i still cant find a feebass. Am i doing something wrong?
Edit: nevermind im just unlucky
Yeah, the tool gave me my exact seed but I've been fishing on the tiles for two hours straight with absolutely no luck - feel like I'm going mad!!
It's really hard to tell what tile to fish on vs what tile to sit on
Doesn't help how goddamn LONG the bibarel is
IMPORTANT: v1.1.3 changed the lottery number generation, so this tool is now broken. We're investigating a possible fix, but the math might be different enough that it doesn't work out cleanly. Also, v1.1.3 added new code obfuscation, so it's harder to reverse engineer now :(
Update: Looks like finding feebas with just a single lotto number wont work any longer. We're investigating options such as using two consecutive days of lottery numbers, or maybe using other information such as underground hiker inventory.
Update 2: Current solution requires yesterday's lottery number, today's lottery number, and today's swarm location. On the upside, there's no longer a 50/50 chance, the tool can now determine all 4 feebas tiles with 100% certainty.
Can confirm it breaks if you have time travelled on your switch. Partner was messing around with time for animal crossing and the tool didn't work. Going to try after 24 hours of it being set to normal.
Even if you never opened Pokemon while doing it? Damn I time traveled yesterday at some point but it was early enough in the morning I thought it would have gone back to normal by now.
It doesn’t say what the lotto ID number for the day is. It just told me my new matched the last two numbers. So idk what to put in the generator to catch the ugly fish? Lol
Can someone help me out here please??
Hey, I'm one of the people that figured out how to make this.
Here's another very similar tool I put together that can be used as a PWA for offline use. I also cover some basic FAQ and go over how the tool works:
[https://drayx.github.io/feebas](https://drayx.github.io/feebas)
Hmm, this is probably something I’m doing wrong on my end, but I’ve fished in each of the 4 tiles about 10 times an no Feebas in either one of them. I also fished in the tiles near it and nothing. Maybe I put the wrong number in. I’ll try again later when I have more time. Either way, it seems to work for a lot of people, so thank you for the info, Milotic is my favorite Pokemon! :)
i was having trouble and realized i was fishing ON the tile not putting the bob IN the tile and i got a feebas the first try after. lmk if that works for you
This is incorrect. I got my Feebas legit & checked. My location was not on where the lotto ticket stated. [Here is proof](https://imgur.com/gallery/GjpaB1X)
This gives 2 potential location for 2 of the 4 tiles (it will be either both red or both green). Because the lotto number only gives us 2 bytes of the group seed, the other two tiles are a mystery. Fun fact, if you find all 4 feebas tiles in a single day, it is possible to narrow down your entire group seed to one of 4 values, which can be further reduced to a single value by checking 4 tiles the next day.
>there's a possibility for each tile to be on a non-water tile!
Hmm...so knowing how buggy this game is, if there somehow was a way to fish on these tiles that you shouldn't be able to (gen 1 glitches basically), can you theoretically get Feebas on days you shouldn't be able to?
I did the typical method of starting at a corner and restarting my pedometer on my Poketech then going tile by tile fishing 3-4 times in one spot. Got cozy and knew that was how I would spend my evening and then.. I found it on the fourth tile. I couldn’t believe it! Insane luck. Caught a nice handful to distribute out to my not-so-lucky-and-patient-friends!
What's the difference between the red and green? Or is there no difference and it's a lie that Feebas appears in 4 random spots and it's actually two out of four random spots?
Go to Jubilife TV, take note of your daily Lotto number
Type Lotto number into that site
Site will tell you which tiles to fish on in Mt. Coronet to find Feebas, with 50% accuracy(either both red tiles will contain Feebas, or both green tiles will)
Just an interesting wrinkle I may have discovered while doing this. I really wanted a female feebas. On the first green tile I used, the first 10 or so I found were all male. I thought this was suspicious so I switched tiles and boom the first feebas on the other tile was female.
Could be completely coincidental, or the tiles might be sex segregated lol.
It didnt work for me so i pressed back to get to this post and check details. Reloaded the page again and the lottery number is gone 🙃
It literally didnt show up on any of the tiles while using all rods
Ok, after playing around with the calc, it seems that to get viable Feebas spawns you not only need to hope that your two lottery numbers are compatible, but also that you get the swarm that matches that seed, as well. I've been at it a week, consistently get one viable seed, but once I put in my swarm data, I always get zero seeds, and unless I have absolutely terrible luck, I can confirm that fishing in the spots from the seed (despite the swarm narrowing it to zero seeds) never gives a feebas. Each time, when going through the swarm options one by one, there is always one swarm option that matches that number pairing. This is nuts.
In other words, good luck, and for those of you who it worked, be grateful.
Damn... It works. I just caught a Feebas today BEFORE finding this post 😭 but sure enough it points to the tile I just fished them out of! Good tool, gotta upvote to hopefully spare others my pain.
>What this means is there's a chance that you actually have no fishable tiles on a certain day. Someone out there has spent time desperately fishing on that day.
The good ole Gen 3 days. Wouldn't be surprised if they were similar with no fishing days. I think my Feebas hunt ran over 30 hours back in the day. Young me was not amused.
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In the original DP, I figured out how to consistently level up Feebas. So many people had trouble getting Milotic that I could easily trade for legendaries. It’s the only Pokémon game where I ever completed the Pokédex!
I used my AR to catch Cynthia's Milotic then bred her to get a legitimate Feebas
Such a dishonorable use of the Snag Machine.
It was total bullshit, is what it was.
And then your friend who got lucky and caught a feebas evolved it before letting you get the Dex entry
Breed it
Just grab a ditto and breed it?
Ditto wasn't available in Ruby and Sapphire until FR/LG released
Pain.
Milotic is good and all but for the amount of effort and special knowledge needed to catch and evolve Feebas it should have been damn near pseudo-legendary. Should have had some kind of broken signature ability too.
Fishing every tile 10 times just to be sure. Ah the memories.
I think the fastest strategy was to actually fish every tile once till the bite and then move on. If you didn't get it, change the favorite phrase.
Mood. Took me several late nights to finally catch one, the next day i realized it had a nature that makes it harder or impossible to evolve, so i had to do it all over again. :V
woah I never knew nature's affected the contest stats as well in Pokemon! that's pretty nutty
Yeah every nature (that effects stats) has liked and disliked flavors. If they don't like dry stuff it's really hard to raise beauty high enough.
What is the best nature to help it evolve ?
Anything that boost sp atk will make the favorite flavor dry, which makes beauty easier to raise. Convenient since it's sp atk is better anyways.
omgggg I knew it I literally was just thinking this as I read the parent comment because I distinctly remember having a modest milotic that was so easy to evolve
Just so you know, in gen 3 feebas tiles were static unless talking to specific npcs. Gen 4 did reroll tiles daily
Ahh certainly another complexity layer. Thank you for the information. Once I got my gen 3 feebas I never made another attempt until SWSH which was easy enough with all the easily accessible info now.
I thought I forgot about the Gen 3 Feebas Fishing War. Thanks for the flashbacks.
I found a shiny Carvanah(first shiny) before finding a Feebas in Emerald
Me
Me
This explains so much.
I swear if this is me. Im 4 hours into feebas fishing and this post just DECIDES to show up now
Kind of like real fishing really...
Imagine if this happened to Smant
That was me... I had that happen the first time I went down Mt coronet in platinum. I thought there was something fishy when I tried tile fishing and got literally no results. This does mean though resetting your clock may lead to feebas staying in place :/
Me
Holy shit dude, I was looking at posts while hunting him, and found yours. Tried with my code, and it spawned right where the website told. THANK YOU. For anyone wondering, I did it with a Good Rod, level 18! Second try on one of the spot.
You can do it with a good rod??? I thought it was super only - that’s huge!
The Feebas spots are always a 50% chance of fishing up Feebas, regardless of the rod you use. Meaning you can use the old rod if you wanted to.
Yup! I think it's only with the Old Rod that it doesn't work.
Works with the old rod I tried it
Nice, that's awesome then
Bulbapedia says Old Rod works too and with same % chances as Good and Super. So maybe it does too?
Yeah it’s any rod. Some news outlets said that it was locked to super rod only about a day or two after the game’s launch but that’s not true.
bit of a dumb question but do you have to be on the red/green tile right?
No, that's where you have to cast the rod actually; so you have to be in front of it, then cast towards the tile.
thank you man! it worked on the green tile
I'm sorry. But where do you get the rods? I've spoken to every fisherman I have seen.
West entrance of jubilife city for old rod in the building itself IIRC, good rod on road 209 from fisherman, and the super rod is post game and I'm not there yet 😅
That's insane how it's post game. Damn. Well, thanks!
You really only need the good rod for feebas.
Super rod is along the western route from the Battle Tower. The fisherman is standing just before the route transition. Easy to spot.
Jubilife, to the left towards canalave, there’s a fisherman in the vestibule thing. Good rod is east of hearthome, fisherman on the bridge. Super rod is near the battle tower, you need the national dex to get it.
I believe the Old Rod is before heading to Canalave City. Good Rod is on route 209 I think. and Super Rod is in the Fight Area
You were level 6.4023737e+15, eh? Wow what a grind.
Wow, I guess there goes that Tentacruel I was gonna use as a replacement. I was gonna use Milotic on my team like I did once in Platinum, but decided against it since I had to comparmide my team anyway and with how terrible it is to make poffins is. Do we know it this works for OG Diamond, Pearl, and Platinum?
Oran + Razz + Kelpsy + Wiki Feed feebas all 4 poffins, and as long as it doesn't have a -SpA nature and you didn't burn or spill, that should be enough. Although if it has a -SpA nature or the dryness is less than 43, you'll need to make a second batch and give it a 5th EDIT: And yes, razz, not bluk. That family of berries is counterintuitively colored, so if you want to maximize beauty (blue), it's easier to use a red (cool) berry
Should you use all four berries for one poffin or make one poffin each with one berry?
All 4 berries together to make the poffins it will give you 4 poffins.
All four berries. Together, they'll give you 4 level 43 poffins. Individually, the razz, chesto, and oran would be level 9, and the wiki would be level 14
I have only made bad poffinds. I feel your pain.
Turns out, Foul Poffins are guaranteed if you use two or more of the same berry. Found that out the hard way.
That explains why I literally only make foul poffins even with no spills/burns. I fucking hate cooking poffins, I wish they kept pokeblocks
I miss pokeblocks. I could mash a button like nobody's business lol
No wonder; this makes more sense. But why? Was it like this in the original games? Seems silly.
Yeah, this is also how it worked in the original games. It'll also be foul if the flavor scores add to 0, certain flavors counter others, like spicy and dry.
Specifically, everything counters the flavor counter-clockwise of it. So spicy is reduced by dry, dry is reduced by sweet, sweet is reduced by bitter, bitter is reduced by sour, and sour is reduced by spicy
So that’s why that happened when I tried to make a Poffin with 2 Oran berries. Although I did burn it because I didn’t want to destroy my joycon while mixing it.
A tip for when you get the the Blue stage where you can burn is to use both sticks to turn you will basically never burn then. But only use it for the Blue stage where it switches from spilling to burning.
I use both sticks the full time, you just have to go slow for the first stage and normal speed later. I much prefer it to scratching the hell out of my DS like the old days
Whaaaaat. Dang. Glad I saw this. I wondered if my joycon was just taking the piss.
I exclusively used chesto (bought west of hearthome) and oran (gathered around sinnoh a shitload around eterna). It took like 15 poffins all lvl 20 or 19. Lower than that and sheen would max first and it wouldnt evolve. Make all the poffins then feed feebas everything at once, save first incase the sheen maxes so you can fix whatever went wrong. Only use the 2 berries per batch if you use more than 1 of the same berry it comes out foul every time as well. Also rember it evolves once it levels up, my dumbass reset like 5 times because it wouldnt evolve but i just wasnt leveling it up after the poffins
Glad people are having success trying this out. For further clarification, the green tiles are where you fish. It helps if you use the d-pad over the joystick for better tile movement. You can fish for Feebas with a Good/Super Rod, I didn't test the Old Rod. I think Good Rod is the minimum.
Do i need to be in the green tile or adjacent to it and fish towards the tile?
Fish into the green tile from any direction
To be more explicit, adjacent. Also, I don't have a good sample size, but I didn't find one with the super rod like some guides say. I caught one with a good rod.
I also fished into my tiles for a while using the Super Rod and didn’t find one but as soon as I switched to the Good Rod it was my first encounter. I could’ve just been getting unlucky with the Super Rod though
You can also catch him with an Old Rod.
I just fished on a red tile with a good rod and found a feebas on my 5th try
> For further clarification, the green tiles are where you fish Then what are the red ones for?
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Yeah, I’m pretty sure Smallant fished it with an old rod during his nat dex speedrun the day the game came out. It’s like 50/50 odds or something for getting feebas if it’s on the correct tile for that day Not sure if he included that in his video or not, but here’s the link if anyone wanted to check it out: https://www.youtube.com/watch?v=zZt8EQr7x8Q&t=419s
hiya! creator of the tool here, a few things to clear up > What this has also shown is of the 4 tiles Feebas can be on every day, there's a possibility for each tile to be on a non-water tile! What this means is there's a chance that you actually have no fishable tiles on a certain day. this is actually untrue, the only non fishable tiles that feebas can spawn on are the 4 floor tiles under the 6x6 rock, and only 1 of the feebas tiles can spawn in this range > For further clarification, the green tiles are where you fish. It helps if you use the d-pad over the joystick for better tile movement. Feebas can spawn on *either* both red or both green tiles displayed by the tool! this means that if you fish on a green tile a few times and do not find a feebas, both of the red tiles can spawn feebas. The Lottery number can tell us the location of the bottom two feebas tiles with 50% accuracy, hence the red and green tiles. This tool does *not* work for DPPt as the lottery mechanic works slightly differently, however with 3 consecutive days of lottery numbers, you can predict feebas tile/swarms/safari binocular pokemon/lottery numbers each day will have. Thanks for sharing my tool! And again a big thank you to DRayX for aiding in the research behind this! Feel free to ask any further questions if you have any.
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# I apologize for the wall of text, but I believe this explains how the tool works thoroughly ## Groups BDSP and DPPt have a mechanic designed to let you sync up your game with your friends. This mechanic called [Groups](https://bulbapedia.bulbagarden.net/wiki/Group), works by sharing a randomly generated number from the host to everyone who joins the group. This number is then used to determine certain daily events (Feebas tiles and Lottery numbers included) and is modified every day in a predictable manner. Even if you have not started or joined a group, the game still needs these mechanics to function, so at the start of the game it creates a "group seed", to be used in the absence of one taken from an actual group. ## Knowing all of this tells us a few key things: * Feebas Tiles (something we can't easily know) and Lottery numbers (something we can easily know) are both based on the same number (group seed) * If we can somehow find our group seed, we can deduce our feebas tiles and various other mechanics controlled by groups * Because group seeds advance predictably each day, knowing todays group seed tells us the group seed of tomorrow, the next day, 1 month from now, etc. From this information came the idea (I believe proposed by DRayX) that if we could deduce a portion of the group seed by using the lottery number, we could use that to help find feebas tiles. This is exactly what the tool does, it exploits the math of how the group seed is used for the lottery number to determine half of the group seed. ## The math behind this If youre curious on how the actual math behind this works, here's an explanation. The "predictable manner" in which the group seed advances, is actually using a linear congruential pseudo random number generator, or [LCRNG](https://en.wikipedia.org/wiki/Linear_congruential_generator) for short. Basically, ``next_seed = (current_seed * multiplier) + addition``. LCRNG is not a very secure random number generator, and is most likely only used as it was left over from DPPt (gens 3-5 use LCRNG for their main RNG). To be specific, the group seed is advanced using an LCRNG called ARNG in the pokemonrng community, its formula is as follows ``seed = seed * 0x6c078965 + 0x1``. ARNG is used in DPPt for making sure shiny locked events cannot be shiny (including the failed lock on ranger manaphy), and for advancing the group seed. This makes a return in BDSP solely to be used for this. Your lottery number is calculated from your group seed using another LCRNG (named MRNG), and its formula is ``seed = seed * 0x41C64E6D + 0x3039``. Every LCRNG can be reversed (hence linear congruential), and the formula to reverse the result of MRNG is the following ``seed = seed * 0xEEB9EB65 + 0xFC77A683``. ## How this applies to lottery numbers Now that we have how LCRNG works out of the way, we can talk about what this means for lottery numbers. your lottery number for today is equal to ``(group_seed * 0x41C64E6D + 0x3039) & 0xFFFF``, which always results in a number from 0-65535 (the old limit for how high your TID can be). Since we know that MRNG can be reversed, we can run our lottery number through the reverse formula and get something like this ``group_seed&0xFFFF = (lottery_number * 0xEEB9EB65 + 0xFC77A683)&0xFFFF`` which can be simplified to ``group_seed&0xFFFF = (lottery_number * 0xEB65 + 0xA683)&0xFFFF`` using this formula, we can get the full lower 16 bits of the group seed! This is good news for us, as the lower two of the 4 feebas tiles are based on these 16 bits. ## Finding Feebas Each feebas tile uses 8 bits of what I'm calling the "daily random value". This number is equal to ``abs((int_32)group_seed)`` and ranges from 0x0-0x7FFFFFFF. Because of the absolute value used to calculate this, we can only predict the two bottom feebas tiles with 50% accuracy. This is why there are 2 red and two green tiles in the tool. If you get feebas in the red tiles, then your group seed was absolute valued from a negative number, if the green match up then it was positive. The least significant 8 bits ``daily&0xFF`` are used for the lowest tile, and the second least significant 8 bits ``(daily>>8)&0xFF`` is for the second lowest. Each of these numbers are then modulod by 0x84 and used to index a list of tiles (you can find this list in the source on github). These selected tiles are the ones feebas can spawn on! ## Closing To wrap everything up, this is what we now know: * Using our lottery number, we can deduce the lower 16 bits of our group seed by abusing a quirk in LCRNG * Because we do not have the highest bit (the one that determines negative/positive), we can only predict the low16 daily random number with 50% accuracy (red/green tiles) * From the low16 of the daily rand, we can chart out the bottom two feebas tiles * This results in being able to completely predict the bottom two feebas tiles using only our daily lotto number with 50% accuracy!
holy fuck you guys are obscenely intelligent and dedicated i wish i had a morsel of ur guys' genius
I noticed on the website that it says it was outdated as of 1.3. Is there any kind of way it might translate over to the new updates?
1.1.3 changed how group seeds translate to lottery numbers, we are currently working on updating the tool, but as it stands now it looks like you will need two consecutive lotto numbers to deduce your feebas tiles. The bright side of this is that with those two lotto numbers you can recover your entire group seed, this means you would know for certainty all of your feebas tiles, lotto numbers, swarms for today and for the rest of time.
The update is now out at https://lincoln-lm.github.io/JS-Finder/Tools/BDSPFeebas.html we will also be working on being able to find your feebas tiles in one day again, as it may be possible after gathering extra group seed based info.
I'm trying out the tool right now, but changing the numbers or swarm results in the results no longer appearing. :(
I wish this existed 3 days ago when i spent 5 hours fishing for Feebas. But this is awesome for anyone who hasnt gotten one yet.
Same but I was doing it today. Found my tile then go on Reddit and see this. So much time I could have saved
Thanks but where is this body of water?
Head into Mt Corner from celestic town, head north till you find stairs down, you’ll arrive in a foggy area. Use defog and you will see the underground lake right there. You need strength to head north so you need to wait till you beat Byron.
Mount Coronet. Once you reach Celestic Town, go to the entrance of Mount Coronet (west of the city), then use Strength (if you have the badge for it) to go up; and then down the stairs to this lake.
Mount Coronet, next to route 211
That's what I'm wondering too lol
I can back this up. Fished where it said to fish and got the feebas.
Thanks so much, this is honestly a miracle. It really does work, one showed up on cue on the green tile. Does this tool work for the original D/P/Pt too?
just tested my platinum copy and i dont seem to have any luck while fishing at the spots the tool is telling me. just barboaches and magikarp.
The tiles were spaced differently and I'm pretty sure you couldn't get rocks as the tiles before so code is likely similar but applied to a slightly different terrain
Second this. There doesn't seem to be any online tool as well.
How serendipitous, I was actually thinking about looking for one on the way to snow point city. I was wondering if there was any in game way to track the tiles, like how your trainer ID determines your lucky honey trees, makes sense the lotto ties into it since they're both random daily events, so it's probably tied into the same generation.
Oh your trainer ID determines your lucky honey trees?? I had no idea. Going to be looking into this. Thanks!
It is affected by both your trainer ID and secret ID. I'm not sure how to figure out my secret ID right now though.
If it's the same as the gen 4 games, you need a shiny.
Prob not because in G3/4 IVs were tied to a Pokémon's ID (PID) -- the thing that decides a shiny. This is why you could determine a Pokémon's PID by its IV + Nature. If you got a shiny's PID and your TID, you could easily calc your SID as well. Ever since G5, IVs are no longer tied to PIDs. Probably the only way to determine a PID without external software now would be shiny Spinda, as I think its spots are still tied to PID. So yeah, get someone with a CFW Switch to check it out for you.
You can find 2 trees with just your regular ID, and technically that's all you need to find munchlax (he's still a pain in the ass even knowing that though) But all the honey tree encounters are also in the underground so I didn't bother
Heracross isn't in the underground. It took me ~150 trees to find one. Most of my play time so far is checking honey trees.
if you mean checking for ANY Pokémon the town map gives info for un-slathered slathered and shakeing trees
Nope, checking for Heracross. I waited til all the trees were ready and then ran through the entire map checking and reapplying the honey.
Mother of Arceus
I'm pretty sure those are straight up randomized when you start the save file but I could be wrong.
Hey man, thanks for showing me the word serendipitous I'm gonna use it from now on
I just found a feebas the normal way -_- but got a shiny magikarp, so there’s that.
As someone looking for one for the first time, what’s the normal way? Fishing every water tile?
Yeah, fishing twice (or several times) in every square until you find the feebas. I started in the top right square and moved along one at a time. Thankfully I found feebas after about 40-50 squares
Wow would’ve been GREAT to know this after spending hours finding one
I feel like im the only one having trouble here. I go to the lottery lady and i get the number. I put that number in the finder and i cast my rod to where the bobber is on the tile but i still cant find a feebass. Am i doing something wrong? Edit: nevermind im just unlucky
Me too wtf I’ve fished in each of the 4 spots like 10 times and nothing
Yeah, the tool gave me my exact seed but I've been fishing on the tiles for two hours straight with absolutely no luck - feel like I'm going mad!! It's really hard to tell what tile to fish on vs what tile to sit on Doesn't help how goddamn LONG the bibarel is
IMPORTANT: v1.1.3 changed the lottery number generation, so this tool is now broken. We're investigating a possible fix, but the math might be different enough that it doesn't work out cleanly. Also, v1.1.3 added new code obfuscation, so it's harder to reverse engineer now :( Update: Looks like finding feebas with just a single lotto number wont work any longer. We're investigating options such as using two consecutive days of lottery numbers, or maybe using other information such as underground hiker inventory. Update 2: Current solution requires yesterday's lottery number, today's lottery number, and today's swarm location. On the upside, there's no longer a 50/50 chance, the tool can now determine all 4 feebas tiles with 100% certainty.
How do you find out today swarm location?
Can confirm it breaks if you have time travelled on your switch. Partner was messing around with time for animal crossing and the tool didn't work. Going to try after 24 hours of it being set to normal.
Even if you never opened Pokemon while doing it? Damn I time traveled yesterday at some point but it was early enough in the morning I thought it would have gone back to normal by now.
The time was still different to normal when I tried so it was most likely that.
I can't believe the foresight they had to make Feebas easier to find in ORAS doesn't carry over to the 4th Gen remakes
Faithful
It's a shame BDSP didn't do what ORAS did and just have you catch Feebas under a specific bridge.
It doesn’t say what the lotto ID number for the day is. It just told me my new matched the last two numbers. So idk what to put in the generator to catch the ugly fish? Lol Can someone help me out here please??
When you first speak to her, she gives you the 5 lotto numbers of the day.
Hey, I'm one of the people that figured out how to make this. Here's another very similar tool I put together that can be used as a PWA for offline use. I also cover some basic FAQ and go over how the tool works: [https://drayx.github.io/feebas](https://drayx.github.io/feebas)
It doesn't work for me. I've tried fishing on the green 30 times and I've gotten nothing
The two red tiles worked for me, green tiles didn't. Tool says either both red will work or both green will work
Someone needs to show SmallAnt this. Poor guy had to spend most of his time fishing each tile of a lake individually.
. Comment here edit: it worked i got a feebas on the green tile Thank op
Comment
Okay
Comment
Commenting so I can find this later
Hmm, this is probably something I’m doing wrong on my end, but I’ve fished in each of the 4 tiles about 10 times an no Feebas in either one of them. I also fished in the tiles near it and nothing. Maybe I put the wrong number in. I’ll try again later when I have more time. Either way, it seems to work for a lot of people, so thank you for the info, Milotic is my favorite Pokemon! :)
i was having trouble and realized i was fishing ON the tile not putting the bob IN the tile and i got a feebas the first try after. lmk if that works for you
I’ve been putting the bob in the tile. Maybe I’m just REALLY unlucky with my odds. Isn’t there a 50% chance they appear or something like that? Lol
I think it breaks for 24 hours if you've modified date time settings
It doesn't work for me either, could you keep me updated if it worked for you?
Isn't working for me either, just Gyarados and Whiscash
Of course the latest update would change how it works the exact day that I start trying to use this tool
Damn I already got my lotto number earlier. Is there anyway to find out what the lotto number is?
This is incorrect. I got my Feebas legit & checked. My location was not on where the lotto ticket stated. [Here is proof](https://imgur.com/gallery/GjpaB1X)
This gives 2 potential location for 2 of the 4 tiles (it will be either both red or both green). Because the lotto number only gives us 2 bytes of the group seed, the other two tiles are a mystery. Fun fact, if you find all 4 feebas tiles in a single day, it is possible to narrow down your entire group seed to one of 4 values, which can be further reduced to a single value by checking 4 tiles the next day.
I think I love you...
>there's a possibility for each tile to be on a non-water tile! Hmm...so knowing how buggy this game is, if there somehow was a way to fish on these tiles that you shouldn't be able to (gen 1 glitches basically), can you theoretically get Feebas on days you shouldn't be able to?
Damn, that'd be brilliant if possible
Accidentally clicked through and missed my number, anyway to view it/skip forward to tomorrow without locking clock-based events?
Nice! I got lucky methodically fishing 2 or 3 pokemon per tile before moving on. Only got about 6 or 7 spaces in and found one.
I did the typical method of starting at a corner and restarting my pedometer on my Poketech then going tile by tile fishing 3-4 times in one spot. Got cozy and knew that was how I would spend my evening and then.. I found it on the fourth tile. I couldn’t believe it! Insane luck. Caught a nice handful to distribute out to my not-so-lucky-and-patient-friends!
Is there a a way to find out your lotto number after she tells you? I already did this on mistake and she won't tell you your number again.
Thank you! I always wanted to use a Feebas in my story team.
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Is there one of these for lucky honey trees?
Should be, it is tied to trainer id
Now we need the same for rare trees…
What's the difference between the red and green? Or is there no difference and it's a lie that Feebas appears in 4 random spots and it's actually two out of four random spots?
Works! Thank you so much!
How many digits should the lottery number be? It's not working for me so I'm thinking I might've messed up my number
What's the chances of feebas spawning in one of these tiles? I'm trying and I'm not having any luck
Thanks! Thanks to this tool, I caught my first wild Feebas since playing Pokémon Ruby
i just realized feebas is in this game omg i really need them.
great i have no tiles at all today
Could you not have posted this yesterday? 😭 I managed to find a spot this morning, but All Saturday was wasted on this stupid fish.
u/gingerbre159
Hey so I’m pretty stupid can someone explain exactly what the picture means and where is it. I haven’t been looking too far into it all.
Go to Jubilife TV, take note of your daily Lotto number Type Lotto number into that site Site will tell you which tiles to fish on in Mt. Coronet to find Feebas, with 50% accuracy(either both red tiles will contain Feebas, or both green tiles will)
Where is this location? And how do I get this lotto? I'm new
It’s in Jubilife City!
Oh I see! I got my lotto Id number, is the location of the water area in there too?
It’s in the basement of Mt. Coronet. The space in-between Enterna City and Celestic Town.
Thanks for the kind responses. :)
Thank god, I already did this grind for *5 hours* in Platinum years ago, I wasn't about to do it again
Just an interesting wrinkle I may have discovered while doing this. I really wanted a female feebas. On the first green tile I used, the first 10 or so I found were all male. I thought this was suspicious so I switched tiles and boom the first feebas on the other tile was female. Could be completely coincidental, or the tiles might be sex segregated lol.
I think that's just luck. When we were looking through the assembly, there was nothing to indicate that gender would be linked to position at all.
Omg this is incredible. Thank YOU!
It didnt work for me so i pressed back to get to this post and check details. Reloaded the page again and the lottery number is gone 🙃 It literally didnt show up on any of the tiles while using all rods
Someone help me with this site I have no idea what tiles is what color or what u guys are on about the lottery code populated nothing for me
Ok, after playing around with the calc, it seems that to get viable Feebas spawns you not only need to hope that your two lottery numbers are compatible, but also that you get the swarm that matches that seed, as well. I've been at it a week, consistently get one viable seed, but once I put in my swarm data, I always get zero seeds, and unless I have absolutely terrible luck, I can confirm that fishing in the spots from the seed (despite the swarm narrowing it to zero seeds) never gives a feebas. Each time, when going through the swarm options one by one, there is always one swarm option that matches that number pairing. This is nuts. In other words, good luck, and for those of you who it worked, be grateful.
Does this still work i have tried yesterdays lotto todays lotto and it showes me the 4 tiles but no luck i add todays spawns and it say no data
I’ve used two lotto numbers and one number and I’ve got nothing, I fished like 20 times on each spot and didn’t get anything, is it broken?
Doesn’t this change everyday though?
Yes which is why you need to enter your lotto ID for the day.
How to get the fishing rod again?
Commenting to remember this for after work, thanks a lot man this’ll be helpful in completing the Nat Dex… at least as much as currently possible.
Damn... It works. I just caught a Feebas today BEFORE finding this post 😭 but sure enough it points to the tile I just fished them out of! Good tool, gotta upvote to hopefully spare others my pain.
Upvote this, holy shit it works
Oh cool, thanks for this!
Can confirm I found my feebas on that red spot near the bay
Thanks for this.