The Callisto Protocol™

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

Developer: Striking Distance Studios
Publisher: KRAFTON, Inc.
Released: 2 Dec 2022
Price: $59.99
Platforms
Followers: 90,675
Steam Deck: Verified
Languages: English +11
Controller: Full
Age rating: M

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Update posts

0 posts

Posts announcing an update, tagged as patch notes or not

Last 90 days · as of 01:06 UTC

How this is measured

Posts in a game's official Steam news feed that announce an update: tagged as patch notes by the developer, or plainly about a patch or a released update.

News checked every 12 hours. Observed since 20 Oct 2026.

An announcement is not a build. Developers can ship updates without a post, or post about several updates at once.
Untagged posts are recognised from their words, so a few updates are missed and a few other posts may be counted. Tagged posts are marked Patch notes on the Updates tab; recognised ones are marked Update.
Older posts are being read back through each game's history, most played games first, so months before October 2026 fill in over the coming days.

Source: Steam Web API, ISteamNews/GetNewsForApp. Full methodology

Announcements

[KR Users Only] Region-Specific Announcement
28 Oct 2026 · Community Announcements
[KR Users Only] Region-Specific Announcement
3 Sept 2026 · Community Announcements
Free Gore Skin Collection for ALL Players!
21 Dec 2023 · Community Announcements
7/25 Patch Update Patch notes
25 Jul 2023 · Community Announcements
7/17 Patch Update Patch notes
18 Jul 2023 · Community Announcements
6/29 Patch Update Patch notes
29 Jun 2023 · Community Announcements
Final Transmission - Now Available!
29 Jun 2023 · Community Announcements
Riot Bundle Available Now!
23 May 2023 · Community Announcements
4/18 Patch Update Patch notes
18 Apr 2023 · Community Announcements
Save 30% on The Callisto Protocol™ Until March 23
17 Mar 2023 · Community Announcements
Contagion Bundle Available Now!
14 Mar 2023 · Community Announcements
2/14 Patch Update Patch notes
14 Feb 2023 · Community Announcements
2/7 Patch Update - Hardcore Mode is Live! Update
7 Feb 2023 · Community Announcements
2/7 - Steam Deck Update Patch notes
7 Feb 2023 · Community Announcements
1/19 Patch Update Update
20 Jan 2023 · Community Announcements
12/15 Patch Update Update
15 Dec 2022 · Community Announcements
12/6 Patch Update Update
7 Dec 2022 · Community Announcements
12/2 Patch Update Update
4 Dec 2022 · Community Announcements
Pre-Load The Callisto Protocol Now!
30 Nov 2022 · Community Announcements
Mastering Horror | The Callisto Protocol Docuseries: Episode 3
18 Nov 2022 · Community Announcements
Mastering Horror | The Callisto Protocol Docuseries: Episode 2
18 Nov 2022 · Community Announcements
Mastering Horror | The Callisto Protocol Docuseries: Episode 1
18 Nov 2022 · Community Announcements

From the game’s Steam news feed, last checked 01:06 UTC. An announcement is not a build: games can update without posting. Every public build we saw is on the Builds tab.

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