Militsioner currently holds an official Steam Deck compatibility status of "Unknown" on the Steam store. During public playtests and demo periods for the surreal immersive sim by developer TALLBOYS, players running the game on Steam Deck and Linux encountered instant "Fatal Error" crashes at launch, prompting developer hotfixes to restore boot compatibility alongside ongoing gamepad mapping bugs.
With the full release planned for 2027 under publisher CRITICAL REFLEX, running the game on Valve's handheld remains an experimental work in progress based on open playtest builds.
Steam Deck Compatibility Overview
Valve has not evaluated Militsioner for official Steam Deck Verified or Playable badges. The official store listing highlights Windows support, full controller support for Xbox controllers, and a minimum storage footprint of 20 GB.
| Feature / Detail | Official Store / Playtest Data |
|---|---|
| Official Deck Verification | Unknown |
| Developer | TALLBOYS |
| Publisher | CRITICAL REFLEX |
| Planned Release Year | 2027 |
| Storage Required | 20 GB available space |
| Controller Support Tag | Full controller support (Xbox Controllers listed) |
| Public Playtest Deck Status | Bootable post-hotfix; fatal errors and UI bugs reported |
Playtest Performance and Launch Errors on Steam Deck
Early handheld testing during the Open Playtest City Watch builds presented severe stability hurdles for SteamOS users.
Players attempting to start a new game on standard Steam Deck and Steam Deck OLED hardware reported that the opening cinematic would run for a few seconds before the application crashed to desktop with an uninformative "Fatal Error" dialog. While audio continued playing in the background, dismissing the error message halted execution on the frozen frame. Community members attempting workarounds with older Proton versions, including Proton 7, could not bypass the crash.
In response to reports on the Steam community forums, developer representative OxotnukUbitsa confirmed that the team deployed a hotfix aimed directly at resolving compatibility issues on Steam Deck and Linux. Following the hotfix update, players confirmed the game successfully booted past the introduction and reached gameplay.
Known Gamepad and Interface Issues in Playtest Builds
While hotfixes allowed the game to launch, playtest builds (including build 0.47.3.10) exhibited noticeable input integration issues on Steam Deck:
- Inventory and Item Handling: In patch 0.47.3.10, item pickup mechanics malfunctioned on controller inputs. Both single-pressing and holding the X button sent items directly to the inventory rather than keeping them in the player character's hand.
- Mouse and Keyboard UI Prompts: Despite the store page advertising full controller support, the playtest interface defaulted to displaying keyboard and mouse keybinds on screen.
- Menu Navigation Glitches: Navigating the main menu on Steam Deck occasionally required using the touchscreen. Modifying video options via directional pad arrows caused tabs to reset back to the gameplay options screen.
- Missing Controller Functionality: Testers reported that assigned buttons did not always correspond to their labeled actions, preventing players from opening the map or interacting cleanly with the inventory without custom adjustments.
Outside of Linux-specific quirks, Fatal Error crashes were also documented on desktop PCs when altering DirectX 11 settings for lower-end machines or attempting to skip hours inside the bunker while the Colossal Policeman was angry.
Frequently Asked Questions
Is Militsioner verified on Steam Deck?
No. Valve lists Militsioner's Steam Deck compatibility as "Unknown." Official testing has not been published on the Steam storefront ahead of its 2027 release window.
Can you play the Militsioner demo or playtest on Steam Deck?
Yes, but stability depends on the build. While initial playtest versions crashed immediately after the opening cinematic with a "Fatal Error," the developers released a hotfix that enables the game to boot on Linux and Steam Deck.
Does Militsioner have working controller support on handhelds?
The store page lists full Xbox controller support, but recent playtest builds suffered from control bugs on Steam Deck. Issues included keyboard prompts appearing on screen, touchscreen requirements for menu navigation, and an item pickup glitch on the X button.
