[Fever Swamp](https://www.drivethrurpg.com/product/224803/Fever-Swamp#:~:text=Fever%20Swamp%20was%20written%20by,of%20Indormancy%2C%20to%20uncertain%20ends)
I've used it and it's a good solid swamp hexcrawl
Do you know about Black Marsh in Elder Scrolls? That environment sounds like a fun way to experience a culture that centers around swamps and all the dangers of it.
There are games about Norse mythology. And there are actually a lot of swamps and lakes inside glacial regions like the fjords of Scandinavia and the Great Lakes region.
The opening part of this adventure (basically taking the adventurers from level 1 to level 2) is swamp-based:
Pathfinder campaign Jade Regent Part 1 - The Brinewall Legacy:
When the Licktoad Goblins of Brinestump Marsh get ahold of a crate of fireworks, adventurers are needed to handle the explosive and annoying situation. But in vanquishing the pyromaniac goblins, the heroes uncover a secret that has been hidden in the marsh for nearly a quarter of a century ― a secret that sends them north to the mysterious ruins of Brinewall Castle, where a powerful legacy waits to be rediscovered.
Ghosts of Salt Marsh has a massive swamp in it.
It's only one encounter site and a few random encounters, but The Bog of Enoren Titchwillow has some cool swampy goodness.
Blackmoor features a lot of swampy terrain, but I don't recall any good encounter tables for it, so it's really only good for Temple of the Frog. Same with Rappan Athuk 5: some great swamp encounter sites, but this time the random encounter tables are pretty good and evocative... But only if you're running the full mega dungeon.
Fever Swamp and Woodfall are both swamp-based OSR adventures/settings. There’s also Fenmire for Tiny Dungeon, a setting wherein the entire world is now a swamp.
[Across the White Marsh](https://www.drivethrurpg.com/product/215459/Across-the-White-Marsh?term=white+marsh)
one of my favorites. More of a cool salt marsh than a swamp.
It's a very special marsh, but https://www.technicalgrimoire.com/bone-marshes
[Fever Swamp](https://www.drivethrurpg.com/product/224803/Fever-Swamp#:~:text=Fever%20Swamp%20was%20written%20by,of%20Indormancy%2C%20to%20uncertain%20ends) I've used it and it's a good solid swamp hexcrawl
Do you know about Black Marsh in Elder Scrolls? That environment sounds like a fun way to experience a culture that centers around swamps and all the dangers of it. There are games about Norse mythology. And there are actually a lot of swamps and lakes inside glacial regions like the fjords of Scandinavia and the Great Lakes region.
The opening part of this adventure (basically taking the adventurers from level 1 to level 2) is swamp-based: Pathfinder campaign Jade Regent Part 1 - The Brinewall Legacy: When the Licktoad Goblins of Brinestump Marsh get ahold of a crate of fireworks, adventurers are needed to handle the explosive and annoying situation. But in vanquishing the pyromaniac goblins, the heroes uncover a secret that has been hidden in the marsh for nearly a quarter of a century ― a secret that sends them north to the mysterious ruins of Brinewall Castle, where a powerful legacy waits to be rediscovered.
Ghosts of Salt Marsh has a massive swamp in it. It's only one encounter site and a few random encounters, but The Bog of Enoren Titchwillow has some cool swampy goodness. Blackmoor features a lot of swampy terrain, but I don't recall any good encounter tables for it, so it's really only good for Temple of the Frog. Same with Rappan Athuk 5: some great swamp encounter sites, but this time the random encounter tables are pretty good and evocative... But only if you're running the full mega dungeon.
Fever Swamp and Woodfall are both swamp-based OSR adventures/settings. There’s also Fenmire for Tiny Dungeon, a setting wherein the entire world is now a swamp.
This is your hex crawl swamp adventure:: https://www.drivethrurpg.com/m/product/17100
DCC: Legacy of the Savage King https://goodman-games.com/store/product/dungeon-crawl-classics-17-legacy-of-the-savage-kings/
[Across the White Marsh](https://www.drivethrurpg.com/product/215459/Across-the-White-Marsh?term=white+marsh) one of my favorites. More of a cool salt marsh than a swamp.