Steam
Protocol X
Also known as Protocol X, p10, protocol x
In the semi-open world horror game Protocol X, you must uncover a dark past in 1975 Germany, survive deadly experiments, save your family and the Weltel family, and race against time in a historical story shaped by multiple endings.
Last update
24 May 2026
Latest update
Update history
Browse past updates and patch notes for this game.
12 updates
February 2026
- OptimizationOptimization corrected.
- Bugs fixedSmall bugs fixed
- Fixing BugsFixing small bugs
- Protocol X is going Free to Play!Protocol X is going free to play on February 18th. Thank you for your support!
- The canvas system has been made more consistent.The canvas system has been refined for better consistency.
- General Improvements UpdateThis update includes minor adjustments and general improvements. No bug fixes were made in this update.
- System Update: Performance & StabilityPerformance Improvements: Response times have been optimized. Bug Fixes: Minor glitches from the previous version have been cleared out. Enhanced Capabilities: Adjustments were made for even more natural and fluid inter…
- German and English language support has been added.
January 2026
- December 29 updateBugs fixed
- December 28 updateBugs and lighting have been fixed
- January 26 updatebugs and minor things
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