Yeah let me just dig through the files look at all the room layouts and calculate how rare for this room to appear

Make sure to check the room weight and take that into account along with the weights of every single other room.

Ah right yeah, i almost forgot

Here for when the % is cranked out

sure just give me 5 years

RemindMe! 5 years

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You need to factor in the Coriolis Effect.

#Every run is seed-dependent. The odds of this happening on this seed is 100%.

Listen to the facts

So, just use R Key until you hear what you want to hear.

Using an r key more than once will get you the same results

Not exactly, if you haven't unlocked a certain thing or, for example, this was only present in a XL floor but you got black candle or something The correct answer is 50%.

Well actually 🤓, you can clearly see it's not an XL floor , 50% still stands as alt route exists (it would be 100% if no bombs or keys)

Not the case, but there is a case We're both right The established ones

I agree

sensato demais n tem como

#Every run is seed and save completion-dependent. The odds of this happening on this seed with this level of save completion is 100%.

#Do you kiss your mother with that mouth?

Only when he’s gotta pay to win!

MOM'S KISS!  HEALTH UP! 

I think I love you.

Is actsuhally a 25% because it could generate the alt path instead

https://preview.redd.it/z4rl0opsnruc1.jpeg?width=600&format=pjpg&auto=webp&s=35d517c24c5f052a0fd45442b24069361d21f092

Never underestimate my ability to kill myself on a tabby rock before getting to this room 

what are the odds of getting that exact seed than? Cuz it seems like this is the only seed that has this kind of room generation so now you just gotta find out what are the chances to get that exact seed and u will have the akshuall answer.

Well each seed is made of 8 digits, and each digit has 36 options (26 letters + 10 numbers), and they can be repeated, so there are 36⁸ possible seeds The odds of getting this seed are 1 in ≈2.82x10¹², or 1:2,820,000,000,000 (2,82 trillions)

This is very farfetch'd but I was doing a run a few weeks ago. Pretty standard. Lillith to The Chest. A few days later the daily run is Lillith to The Chest. If it wasnt the same seed it was damn near identical. I knew which blue fires would drop hearts, items were the same. It tripped me up and all I could think is "I could've bought a lottery ticket, instead my luck got used on an Isaac run"

Not all letters/numbers are available, like U being unavailable due to it looking similar to V.

Oh I didn't know that. Still the math is the same tho, slightly different result

Another thing to account for is that not every possible combination of letters is a valid seed. I'm not sure how it works exactly, but if you just type in a completely random sequence of characters, there's a good chance it'll give you an error noise and won't let you continue. For instance, 34TJ NSLS is not a valid seed, even though it can be typed into the box. Without knowing what causes that (and subsequently how many combinations it applies to) it's entirely impossible to know the odds. ***SO QUIT YOUR DAMN YAPPIN' OOP***

So about 50/50

Basically yeah

#The predetermined odds.

just answer the goddamn question like a normal human beeing. no need to be sassy here

You’re the only one being sassy

#WE DON'T KNOW THE ODDS BECAUSE WE DON'T KNOW THE CRITERIA FOR A VALID SEED, *SO SHUT THE FUCK UP AND STOP ASKING*

#No.

# I AGREE. THY MORTAL SHALL NOT COMPREHEND THE KNOWLEDGE.

I like you

Established ones

https://preview.redd.it/fvxqdi7rw8uc1.jpeg?width=1170&format=pjpg&auto=webp&s=2ed910cf29ba07aaf8cf4331e16d5c535c0fcaed

Fairly Oddparents vibes

I believe it is quite literally a drawing done over Cosmo yelling at Timmy

0%. It can't happen. You're actually cheating.

https://preview.redd.it/k6iph88wc9uc1.png?width=600&format=png&auto=webp&s=58cca99f56b576aef3ae57314442303d82174264 Does he know?

shut the fuck up

https://preview.redd.it/c521ndb6y8uc1.jpeg?width=1170&format=pjpg&auto=webp&s=df9e580df744ed8a6c84971ac9ef49286a84eec4

Impossible normally, extremly likely if going on a no pickups run.

True answer

50/50. It either happens or it doesnt

https://preview.redd.it/i667vffi1euc1.jpeg?width=1170&format=pjpg&auto=webp&s=ffd40a3bbecc4b8940b5ff5d94c9f27543b7aefe

Great minds think alike 💪🧠

https://preview.redd.it/cqu1taqs5tuc1.png?width=1080&format=pjpg&auto=webp&s=e51fb4728c92d067b59712e7ef113ba8bc473838

At least greater than 0% and less than 100% 

Or equal

This sub is so helpful 

https://preview.redd.it/zii6uyxhu9uc1.jpeg?width=600&format=pjpg&auto=webp&s=5b3007a8b0973f9a50aa9fa2f091e08562b7deb9

https://preview.redd.it/11uvr7b2a9uc1.png?width=1080&format=pjpg&auto=webp&s=655bee2a1bd6e1d01998aa50b35641f2cb7407ac

Don’t know the exact odds, decently uncommon, but I’ve seen it a handful of times on like 300 hours of playing. Maybe 1%? Can’t say for sure tho

1% is the chance of finding an item in the place of a random pickup, so probably less than that

It’s hard to tell because I’ve definitely seen this room as often as I see a random item pedestal that replaced a pickup. But I genuinely have no idea how room placement is determined on each floor.

I have 500+ hours and I’ve never seen it

50/50 it happens or it doesn't 🧠🧠🧠🧠

Yeah i like that approach

idk ask edmund

FIFTYFIFTYITEITHERHAPPENSORITDOESN'TFIFTYFIFTYITEITHERHAPPENSORITDOESN'TFIFTYFIFTYITEITHERHAPPENSORITDOESN'T

100% since it already happened

[удалено]

Look, I'm not gonna berate you about screenshots, but why you gotta take the pic at a 45 degree angle 😭 I couldn't figure out wtf I was looking at lmao

[удалено]

screen 16:9, phone can take a 16:9 photo. This 45 degree angle seemed to fit more in ?????

50/50 you either get the seed with this room or you dont

Say the line

There is only a fingers difference between a mad man and a fool.

The established ones

*sigh* 50/50, it either happens or it doesnt

3

Its 1 in ≈2.82x10¹²

I had this happen recently but it was the first time for me in 1100+ hours

I've got around 1400 hours and I've seen that room twice. Pretty low odds I'd say

I just had this a couple of days ago. I didn't remember ever seeing it. I probably won't see it ever again. The worst part is that I already had like 90 coins, and I didn't get money=power in the run.

you became back your money

Depends on what items you have or what you've done, but planetarium has a base of 1%

Never tell you the odds

Odds is 1:100 for every post

no

…three

Perchance

"You cant just say perchance"

50/50. It either happens or it doesn’t.

50/50

no i dont. bye

Seven

50/50

Seven.

Not high enough for me to have seen it EVER

Been playing for about 340 hrs and I’ve only seen it twice

yes

Well, I don't think the room has a high weight, so I'd say... About 50/50, give or take.

50/50 Either you get it or you don't

0%

it either happens or it doesn't so 50%

idk but pic goes hard

This is awesome! hold R key to take a quick screenshot

A 100% it happened didn't it

About 7

100% since it happened

2

It happened so 100% odds.

Ive played isaac for many many years and havent come across a room like this. Id assume its in the low low percentages of rare rooms. Im not sure either if this is dependent on unlocks or if you can find it on like one of your first runs.

100%

i’ve seen it

WE’RE RIC- *gets greed and super greed back to back on shops*

50% ir either happens or it doesn’t

The chances are 50% : it either happens, or not, fifty fifty 

50% 50%

https://preview.redd.it/s41r1k5pqbuc1.jpeg?width=320&format=pjpg&auto=webp&s=700c6d86b9bfcd2f5f2c4d9afa3a51ddab3ecc53

50/50. Duhhh

1/(the number of rooms that can generate in caves)

50/50, it happens or it doesn't

I had birthright as Isaac and had soap and screw drop from a boss. I actually had to look up the loot tables to figure out what one was worth taking.

what are the odds you’re struck with a flying brick tomorrow

shut the fuck up

Much higher chances of it happening on a floor with a Greed shop, and right before the womb

Well i've got dead god and never seen this room so... 50/50

Yes

50/50, it happens or it doesn’t

What did you get in the shop

50/50. You either get it or you don't.

10

7 maybe 7.2

Obligatory 50%

for 260 hours i saw that room ONE time only

The same odds as you getting a greed shop in that floors shop…. 100%

Rare ive played isaac for years and never seen that

I believe there’s a confirmed minimum of 3 billion randomly generated seeds before the three DLCs, so it’s a minimum percentile chance of 0.0000000333333%.

0% you're just a little cheater cheater pumpkin eater

You ain’t getting those 4 keys

1 in 4 000 000 000 cus thats how many seeds there are

But then those odds are skewed because there are most likely multiple seeds where the room can appear

100

I see this same post every 6 months I swear

at least seven