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PsiloSybil
An old-school, tough-as nails classic linear 3D platformer with a faithful PS1 cartoony aesthetic. 25 fully original levels, boss fights, collectibles, time-trials, and many secrets.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via SteamSpy as of 2026-05-19.
“Since the early days of 3D platforming back on the old PlayStation 1 alongside the Nintendo 64 and the Dreamcast, I've grown up with some of the best that the expanding gaming industry had to offer at the time, whether this be the lightning-fast Sonic on his brand new adventure…”
— a player, Steam review · 23 hrs played“Really well made game, wouldn't reccomend it to people who arent into memorizing specific patterns or very difficult platformers. Its hard as ♥♥♥♥ but really good”
— a player, Steam review · 13 hrs played“I have a question for god... WHHHYYYYYYYYYYYYYYYYYYY!!!!?? Just add one more checkpoint on the tower level please.”
— a player, Steam review · 19 hrs playedLatest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Patch notes 1.0.1-c
Truffle Traffic - Fixed Raphael dialogue after freeing. Ground Meat - Moved one token and added an obstacle. Crystal Hollow, Gruesome Grotto, Dark Chocolate - Changed lighting to improve visibility.
Patch notes 1.0.1-b
Quick bugfixes and improvements. Thanks to everyone that came together to snipe glitches. Gamepad - It is now possible to override the button prompts to always display keyboard, Dualshock or XInput bu
New Level: Ground Meat -- Final Update!
It was a grueling process, but PsiloSybil development is finally over: update 1.0.1, with the final level Ground Meat , bringing the total to 25 fully playable and unique levels, is here. Ground Meat
Patch notes 1.0.0-i
Citrus Falls - Fixed a spot where Sybil could get stuck and vvVViiIIbbbRRrraAAaatTTEee Close Encounters - Bugfix: cows would freeze in air after squashing Sybil - Changed particles when breaking alien
Patch notes 1.0.0-h
Overworld - Minor geometry fixes. New level alpha - Fixes and further asset work.
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-19.
| Genres | Action, Indie |
| Player tags | Precision Platformer · 3D · Platformer · 3D Platformer · Collectathon · Retro · Cartoon · Third Person · Colorful · Stylized · Action · Surreal (SteamSpy community voting) |
| Features | Single-player · Full controller support · Family Sharing |
| Languages | English |
| Controller | Full support |
| Achievements | 11 |
| Estimated owners | 0 – 20,000 (SteamSpy) |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system Storage: 150 MB available space