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Eresys
Eresys is a co-op horror game inspired from the works of H.P. Lovecraft. Teamwork is a key as players take on the roles of four cultists and face the terrifying entities together. Dynamic AI mechanics and unique enemies, Eresys promises to deliver a thrilling and spine-chilling gaming experience.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via SteamSpy as of 2026-05-13.
“I desperately want to see more updates for this game, because it really does seem like there'd be a lot of potential- and the time I spent with it was pretty fun. The stealth elements aren't bad- and in the expansive island map, there's a decent amount to do, even if it was a…”
— a player, Steam review · 3 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.
Necrophosis Demo Available
Discover the macabre world of Lovecraftian horror in our latest project, Necrophosis. The demo is now available for free download. While we paused development on Eresys to focus on Necrophosis, rest a
0.8.2 TEXTURE WORK OPTIMIZATION
0.8.2 TEXTURE WORK OPTIMIZATION AND GAME SIZE REDUCTION In this small update, we've implemented a variety of texture adjustments and optimizations. Hopefully to enhance the gameplay experience, partic
0.8.1 FSR AND FIXES
0.8.1 AMD FSR AND FIXES In this small patch, we added AMD FidelityFX Super Resolution (FSR) to potentially enhance performance on lower-end systems, along with a few minor fixes and tweaks ADDED FSR 2
0.8 ERESYS FULL RELEASE
0.8 ERESYS FULL RELEASE In this new patch we have added a new playable map, the cursed fishing village Innsmouth! With this third map we would like to mark the full release of the game, as it is the l
0.7.1 ABYSSAL TEMPLE FIXES AND TWEAKS
0.7.1 ABYSSAL TEMPLE FIXES AND TWEAKS During the past days we released various quick patches with minor fixes and tweaks, we also added the Hungarian localization and a new setting in the video config
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-13.
| Genres | Action, Adventure |
| Player tags | Action · Horror · Online Co-Op · Lovecraftian · Multiplayer · Adventure · Survival · Co-op · Mystery · Puzzle · Stealth · Singleplayer (SteamSpy community voting) |
| Features | Single-player · Multi-player · Co-op · Online Co-op · LAN Co-op · Steam Achievements · Partial Controller Support · Steam Cloud |
| Languages | English * , Spanish - Spain, German, Simplified Chinese, French, Japanese, Italian, Greek, Korean, Portuguese - Brazil, Hungarian * |
| Achievements | 20 |
| Estimated owners | 50,000 – 100,000 (SteamSpy) |
Minimum system requirements (PC)
Minimum: OS *: 64-bit Windows 7 Processor: intel core i5 4400 / AMD Ryzen 5 1600 Memory: 8 GB RAM Graphics: Nvidia GTX 1060 3GB Storage: 15 GB available space