The Callisto Protocol™

Third-person survival horror in a moon prison overrun by monsters

Striking Distance Studios · Published by KRAFTON, Inc. · Released Dec 1, 2022

Reviews: Mixed; 65% of 44K
Recent reviews: Mostly Positive; 71% of 98 in 30 days
Playing now: 42; peak 24h 51
Steam Deck: Verified
Last update: 3 years ago; Jul 25, 2023

What is The Callisto Protocol™?

This single-player, third-person survival horror game takes place in Black Iron Prison on Jupiter's moon Callisto, where inmates turn into monsters. As prisoner Jacob Lee, you scavenge for gear and fight through the prison with melee attacks, guns, and a gravity weapon while trying to escape.

For you if...

+you like sci-fi horror with a tense atmosphere
+you prefer close-range combat mixed with shooting
+you want a linear, story-led single-player game

Not for you if...

−you prefer ranged fighting to close-quarters combat
−you want open-ended exploration rather than linear progression

What players say

65% of 43,725 reviews are positive · 71% of 98 in the last 30 days

Players praise the visual detail and tense atmosphere. Common complaints include repetitive melee combat, slow pacing, and a weak story. Some players also report crashes, graphical glitches, or unreliable saves.

Screenshots and trailer

The Callisto Protocol™ system requirements

As published by the developer.

Minimum

OS: Windows 10/11
Processor: Intel® Core™ i5-8400 or AMD Ryzen™ 5 2600
Graphics: NVIDIA® GeForce® GTX 1060 or AMD Radeon™ RX 580
Memory: 8 GB RAM
Storage: 75 GB available space
DirectX: Version 11

PC version details

DRM, required accounts, controller support and Steam features.

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 46
Steam features: Cloud saves, Family Sharing
Age rating: 17+

Steam Deck: Verified

All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck
Singleplayer gameplay requires active internet connection
External controllers are not supported for the primary player

Multiplayer and co-op

Single-player

Languages

Full audio: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Simplified Chinese. Text only: Polish, Portuguese - Brazil, Spanish - Latin America, Russian.