Mermaid Swamp

Mermaid Swamp is a freeware horror adventure game by Uri made in WOLF RPG Editor.

Rin Yamazaki and her college friends have their car break down in the mountains on a trip.
Fortunately, a kindly old man offers to let them stay at his house.
But there's a legend about the swamp outside the mansion...

(Content Severity: Some Discretion Advised)
Click here for content warnings.

Download Mermaid Swamp (Remake) | (Mirror)
(Chrome may falsely flag the download as malicious, but it's safe to ignore.)

Voiceless Version | (Mirror)
This version removes the main voice acting. It is generally only recommended if you can't download the full game.

Original Version | (Mirror)

Supported Platforms
The game's engine is made for Windows only, with no native support for other platforms.
To play on Mac, you can try a general-purpose tool like WineBottler.

Usage Notes

Videos are allowed, but should not be profited off of, with the exception of YouTube monetization.
Live streams are allowed.
Fanworks are generally allowed and can be sold.
However, you should not sell anything that uses any specific resources from the game.

[1] Japanese rules page


Make sure to extract the game to its own folder instead of running directly from the ZIP file.
If you don't do so, any saves made will be lost the next time you run the game.

If pictures aren't appearing where it seems they should, you must run the game as an administrator.
Right-click Game.exe, go to Properties, and under the Compatibility tab, check "Run this program as an administator."

(The first such picture should be an illustration of the group in the car.)

You may get an error about Game.dat not being found if the game folder's filepath contains special characters (accents, etc.).
This can be fixed by moving the game folder somewhere without special characters in the path.
There may also be errors when running in certain locales, but it should always work in English or Japanese locale.




I've provided a walkthrough if people get stuck.
Click or highlight the black boxes to show spoiler text.

Walkthrough (Remake)

Goals List (Remake)

Walkthrough (Original)

Extra Links

These contain spoilers for all aspects of the game. Only read them after you've beaten it fully.

Translation Notes
Setting and Considerations Booklet

Woe be to those who near the swamp.