Open now · By request
Schoolgirl vs Fishman playtest
by Anti-Belphetan
Schoolgirls × Mermen × Sewers! A "drenched" horror adventure! Solve mysteries to find an exit, and decide: will you run or fight? Your choices branch the story. Can they escape this nightmare safely...?
It's free to ask. The developer chooses who gets in.
- Access
- By request
- On playtest since
- Nov 1, 2026
- Planned release
- Nov 2026
- Developer
- Anti-Belphetan
- Platforms
- Windows
- Players
- Single-player
- Languages
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
How to join the Schoolgirl vs Fishman playtest
- Open the game's Steam page with the Request access button. Sign in to Steam if it asks.
- Request access to the Schoolgirl vs Fishman playtest there. It's free and doesn't commit you to anything.
- The developer lets players in, often in batches, so it can take a while. Steam emails you when you're in, and the playtest appears in your library.
New to playtests? How Steam playtests work
How AI is used
Generative AI is used for character graphics and some background assets, as well as for the translation. The process involves generating initial drafts based on Vroid captures, which are then manually refined and redrawn by the developer. Custom LoRA models are used to generate facial expressions and additional details. All AI-generated content undergoes strict manual oversight, editing, and touch-ups by the developer before being implemented in the final game.
The developer's own words, from Steam.
About Schoolgirl vs Fishman
High School Girls × Fish Creatures × Sewers
A soaked, no-escape horror adventure.
A girl wakes up in an unfamiliar underground sewer—
with no belongings and no memory of how she got there.
As she searches for a way out, something lurks behind her…
Grotesque “fish creatures” begin to close in.
Explore a Mysterious Underground Facility
This isn’t just a sewer.
Twisted ruins and unknown structures intertwine beneath the surface.
Who built this place—and why?
Operate switches and levers, uncover hidden keys,
and search for a path back to the surface.
Run… or Fight
These girls can’t stand against the creatures barehanded.
Your only option is to run.
But if you find weapons like bats or pipes,
you might stand a chance.
Be careful—every weapon can break.
One mistake could be your last.
Choices Shape Their Fate
Your decisions determine the girls’ fate.
Will everyone make it out alive—
…or will no one survive?
From the game's Steam page.
