No. Arena Breakout: Infinite is Windows-only, and the Steam Deck's SteamOS is Linux. Valve's own compatibility report for the game returns Unsupported, and Morefun's Steam launch FAQ answers the question in one line: "Linux and the Steam Deck are currently not supported." That has not changed since the 15 September 2025 release.
Why it fails
The game uses ACE (Anti-Cheat Expert) kernel-level anti-cheat. Proton, the compatibility layer that runs Windows games on the Deck, can run Unreal Engine 4 titles without much trouble — the engine is not the problem. Kernel anti-cheat is. Unless the anti-cheat vendor ships a Linux-aware build and the developer opts in, the game boots, reaches the anti-cheat check, and stops. That is what happens here, and it is the same story as a number of other online shooters on the Deck. GamingOnLinux called it at launch ("Anti-cheat looks like a no-go on Linux / SteamOS and Steam Deck"), and nothing since has contradicted them.
What actually works
- Windows on the Deck. Installing Windows on a Steam Deck (dual-boot or a second SSD) runs the game like any low-end Windows PC. It clears the minimum spec on paper — the Deck's APU is roughly GTX 960 territory — but expect low settings and the visibility-first graphics setup. You also lose the Deck's Linux conveniences and the anti-cheat behaves like it does on any Windows machine.
- Streaming from a PC. Steam Remote Play or Moonlight from a Windows PC on the same network works well for this game's pace, and the anti-cheat runs on the host. Latency is the constraint; it is fine for looting runs and marginal for Forbidden-tier PvP.
- Controller. Even on Windows, controllers are not officially supported. On the Deck you will be building a Steam Input layout yourself, and the inventory management is designed for a mouse.
Will it change?
There is no roadmap entry for Linux or Deck support in any of the 96 Steam announcements we index. A change would show up as an ACE update first, then a patch note; both land on the patch notes page when they happen. Until then, treat "works on Deck" claims the way you would treat a redeem code site: with suspicion.