Steam app 2473710 · updated 12 Sep 2026, 23:35 UTC
Solve hidden items and puzzles while avoiding abyssal zombies and traps at school.
239 hourly samples, with the daily peak drawn over them. Weekends are shaded.
33 months, January 2024 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 141 hourly samples from 14 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 98 hourly samples. Each dip is a night. Weekends are shaded.
Abyss School was released on 19 Jan, 2024.
| Language | Full audio |
|---|---|
| English | |
| Korean | ● |
| Simplified Chinese | |
| Japanese | ● |
A blank audio cell means full audio was not marked in the returned language list.
22 achievements in total.
23 developer announcements, Jan 2024 to Jan 2026 · times in UTC
- Added Korean voice acting ːSeyoungHappyːːYooheeSmileː - Adjusted Biabi to look at the player while in the hideout - Improved rigging for Yoohee’s swimsuit skin - Fixed an issue where chairs did not move during the “Operations meeting”…
eTIRUe- Added Japanese voice acting- Reduced an issue where physics behaved erratically during cutscenes- Added 1 new credit imageMerry Christmas! ːYooheeSmileːːSeyoungHappyːThank you for playing!
eTIRUe-Fixed an issue where the starting position of Yoohee's sofa interaction was misaligned. -Fixed a problem in Yoohee and Seyoung's drawing interaction where their feet were clipping through the floor. -Fixed an issue in the glass marble…
Patch notes-Improved rigging for the Maid Costume (Yoohee) -Fixed an issue where the skirt of the Maid Costume (Seyoung) was getting caught -Optimized the Auditorium and Hideout maps (removed some unnecessary objects) -Fixed an issue where unintended…
Patch notes○Added Content -Added "Auditorium" map and story -Added new costume "Maid Costume (Yoohee)" -Added new costume "Maid Costume (Seyoung)" -Added 2 cutscenes -Added new trap "Abyss Swamp" -Added new interaction "Ladder Climb (Yoohee)" -Added…
eTIRUe○Bug fix -Fixed the problem of Yoohee not being able to control after swimming -Fixed the terrain where Yoohee couldn't go up properly after swimming ※We received reports of this problem several times and performed 3 updates, but the…
Patch notes- Fixed the UI hide icon in the model view - Fixed the skirt physics of the CatShirt (Yoohee) ※ We were unable to properly create the shape of the new costume (CatShirt) that was added this time, so there was an issue where the skirt would…
Patch notes○ Added Costumes - Added CatShirt (Yoohee) - Added CatShirt (Seyoung) ○Added Minigames -Added Abyss Follower's Memory Fragment ○Added Side Stories -Added Clumsy Siren "Biabi" 1 -Added Clumsy Siren "Biabi" 2 -Added Yoohee's Burning Artistic…
eTIRUe-Fixed an issue where keys would sometimes not work after an interaction where you dive through a puddle of water -Fixed an issue where the player character would sometimes get stuck in a corner when opening a cabinet door (1F/3F/9F)
Patch notes- Fixed an issue where the game icon was not displayed properly - Fixed an issue where the statue puzzle on the 2nd floor did not work properly ※ In the previous update, we fixed an issue where the wall speed increased depending on the…
Patch notes○ Seyoung costume added - Added “Sportwear” - Added "Casual" ※ The unlock conditions are the same as Yoohee’s Sportwear / Casual costume. ○ Improvement - Seyoung's 3rd attack power is doubled. ○ Bug fixes - Fixed an issue where clicking was…
eTIRUe○ Add costumes - High society school uniform (Yoohee) added - High society school uniform (Seyoung) added ○ Mini games added - Think, Yoohee! Think!! added - Think, Seyoung! Think!! added ○ Sub story added - Bongbong and Seyoung’s battle…
eTIRUe○Story. - Added additional story opening/ending cutscenes - Added new map "Pool" ○Costumes - Added YooHee and SeYoung's school swimsuit outfits. - Yoohee and Seyoung's school swimsuits are slightly different in design and Seyoung carries a…
eTIRUe○Adding content -Added mini-games, shadow puzzles -Added the system to dameged Seyoung's outfit (damaged 1 piece every 2 hits) -Added costume option = stockings on/off (unlocked after completing 5 levels of shadow puzzles) ○Convenience…
eTIRUe○Adding content -Added mini-games, shadow puzzles -Added the system to dameged Seyoung's outfit (damaged 1 piece every 2 hits) -Added costume option = stockings on/off (unlocked after completing 5 levels of shadow puzzles) ○Convenience…
eTIRUe▽2nd floor puzzle modified -The puzzle in the 2nd room on the 2nd floor has been fixed. -The puzzle in the 3rd room on the 2nd floor has been fixed. ※We are sorry to hear that there are some sections of the puzzle that are somewhat boring.…
Patch notes-Fixed an issue where Yoohee crawled in a strange direction when crouching -Fixed an issue where the motion would play repeatedly when Seyoung attacks an abyss zombie too close -When selecting a creature from the Extra Model menu, the…
Patch notes- Apply map optimization - Fixed an issue where the timing of the death scene would be distorted when approaching during the Abyss Follower chase scene. - Fixed an issue where the character would move during a cutscene if the movement key…
Patch notes▽Added features - Added the features to select the damaged level of the Yoohee costume in the extra. - Modified so that the selected Yoohee costume is applied to the model menu. - Memo menu UI design changed. - Changed to notify the…
Patch notes- Fixed the texture on the bathroom wall being an old version. - Fixed an issue where Seyoung or Abyss followers were not visible when going up to Seyoung on the 10th floor. - Fixed to prevent losing the bat in the scene leading to the…
Patch notes- Fixed the problem that the invert Y axis does not work - Fixed an issue where save points on the 1st, 6th, and 10th floors were displayed even though there were none. - Fixed an issue where there was no physics on the bookshelf at the…
Patch notes- Fixed save point error - Fixed an issue where the ‘Strong Woman’ achievement was not achieved
Patch notes-Added save points during floor progression ▽All -Fixed an issue where the title does not change after clear the game -Fixed an issue where the profile Abyss Follower and Elite Abyss Zombie descriptions in perks -Fixed an issue where photos…
Patch notesWhat Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | AbyssSchool.exe | any |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG