Used to identify the game, unaltered. The Callisto Protocol wordmark, trademark of its owner, from the publisher's Steam store listing

The Callisto Protocol

Catalogue entry · not reviewed · store data read 30 August 2026

Survive to escape the horrors of Callisto and uncover the dark secrets of Jupiter’s dead moon.

Horror

Player score

6.5/10

43,632 reviews

Released: 2022
Developer: Striking Distance Studios
Platforms: 3 systems
Critics: Not scored
Steam Deck: verified
Download: 75 GB

We have not written a full review of this game.This is a catalogue entry: everything below comes from a source we can link, checked on a stated date. There is no score and no verdict here, because we only publish those after a reviewer has played the game and written it up properly. Our team may well have played this one. Until someone writes the review, we are not going to imply a verdict we have not put our name to.

What is The Callisto Protocol?

Survive to escape the horrors of Callisto and uncover the dark secrets of Jupiter’s dead moon.

Description as published by the developer on its own store page, read 30 August 2026. It is marketing copy, not our assessment.

The record

Catalogue facts
First released	2 December 2022
Developer	Striking Distance Studios
Publisher	Krafton
Platforms	PlayStation 5, Xbox Series X and Series S, Steam Deck
Genres	Horror
Languages	12 supported

Source. Catalogue facts from Wikidata Q104172915, seeded 30 August 2026. Store data from Steam, read 30 August 2026.

How was The Callisto Protocol received?

Players65%positive of 43,632 · Mixed

Achievements46on Steam

Method. Player figures are Steam's own totals for the PC version, read 30 August 2026. The Metacritic score is the one Steam publishes on its store page and can lag the site itself. Neither is our opinion. We have not published a review of this game.

Accessibility

1 declared features

Method. Features the publisher declared on its own store page. A declaration is a floor, not a review.

What does it support?

Technical support
Capability	Support
Controller	full support
Cloud saves	Yes
Cross-platform play	No
Mod support	No official workshop
Online play	Single-player only
In-game purchases	No
Steam Deck	verified
Download size	75 GB
Add-on content	8 DLC listed
Age gate	17+

Content descriptors

Frequent violence or gore
General mature content

Method. Read from the publisher's Steam listing on 30 August 2026. Describes the PC version. Console versions differ.

What does it cost?

$59.99

Steam price in US dollars, read 30 August 2026. Prices move hourly and vary by region. Check the current price.

Problems players report

We read the 300 most recent negative Steam reviews of The Callisto Protocol on 30 August 2026 and counted what they mention. These are complaints, not confirmed defects: we have not reproduced any of them, and a review describes one person's machine. What the counts tell you is which problems more than one person ran into.

Crashes and freezes26 of 300 (9%)
The game was incredibly boring, but what’s worse is that it crashed near the end and wiped my entire save.
Steam review, 15 March 2026 · 6 hours played · 15 readers marked it helpful
I've tried everything, used two different computers and the game just breaks ( in different spots ) It breaks so hard I have to sign out as I can't even open task to crash it.
Steam review, 9 February 2026 · 4 hours played · 10 readers marked it helpful
Performance and stutter22 of 300 (7%)
Technical issues at launch: Stuttering, frame drops, and visual bugs—especially on PC—seriously harmed immersion (with some issues still lingering).
Steam review, 28 November 2025 · 27 hours played · 48 readers marked it helpful
Learned there is a bug where you can't progress unless you lock your framerate to 60HZ SO AWESOME!!!!
Steam review, 24 December 2025 · 4 hours played · 10 readers marked it helpful
Lost progress or broken saves9 of 300 (3%)
On top of that I lost my save data 3 TIMES.
Steam review, 18 January 2026 · 12 hours played · 14 readers marked it helpful
Save file got deleted after game reboot.
Steam review, 26 July 2026 · 6 hours played · 3 readers marked it helpful

A further 13 reviews call the game buggy or broken without saying how, which is why they are counted separately rather than assigned to a theme. Counted by keyword across review text, so a review discussing two problems is counted under both. Read the reviews yourself.

Games like The Callisto Protocol

24 games overlap with The Callisto Protocol on the tags Steam players applied to it, on genre, and on theme. The closest are Dead Space (2008), Dead Space 2 and Dead Space.

All 24 games like The Callisto Protocol

Common questions about The Callisto Protocol

What platforms is The Callisto Protocol on?

The Callisto Protocol is available on PlayStation 5, Xbox Series X and Series S, Steam Deck. It first released in 2022.

How much does The Callisto Protocol cost?

$59.99 on Steam in the United States, read on 30 August 2026. Prices move often and vary by region, so check the store before buying.

Do players recommend The Callisto Protocol?

65% of 43,632 Steam reviews are positive, which Steam rates Mixed. That is players rating it, not our review. We have not published a review of this game.

Does The Callisto Protocol work on Steam Deck?

Valve rates The Callisto Protocol as verified on the Steam Deck, from its own testing. That means it works out of the box with no configuration.

How big is the The Callisto Protocol download?

75 GB on PC, from the storage requirement on its Steam listing. Console versions differ.

Who made The Callisto Protocol?

The Callisto Protocol was developed by Striking Distance Studios and published by Krafton.