If Steam Deck is your planned way to play MOUSE: P.I. For Hire, the short answer is yes: the developer FAQ says the game is "fully verified as Steam Deck Compatible for launch".
Post-launch Steam Deck testing is now pointing to a practical default too: Medium settings at 40 FPS is the safest handheld setup, while 60 FPS needs compromises.
Short answer
MOUSE: P.I. For Hire is a good Steam Deck fit right now if you are happy with a 40 FPS target. The cleanest setup is the default Medium preset with a 40 FPS cap, while a 60 FPS push needs lower rendering scale and lower shadows.
What is confirmed now
- The developer FAQ says MOUSE: P.I. For Hire is "fully verified as Steam Deck Compatible for launch".
- The same FAQ confirms the game released on Steam for Windows PC on April 16, 2026.
- Steam Deck HQ’s post-launch review says the default Medium preset at 40 FPS is the best overall handheld setup.
- That same review says 60 FPS is playable only after dropping rendering scale to 0.9 and shadows to Low, and even then some drops remain unavoidable.
Controls and PC-side support
- The official FAQ confirms mouse and keyboard support on PC.
- It also confirms full controller support on PC via Steam.
- DualSense and Xbox Wireless Controllers are specifically named in the FAQ, which is a useful baseline for handheld-style play expectations.
- The official support center says button remapping and sensitivity options live under Settings > Controls.
Where the trade-offs still are
Battery life still depends on your brightness, TDP choices, and whether you chase 40 FPS or 60 FPS. Steam Deck HQ reports roughly 11W to 14W projected battery usage on the recommended setup and still notes some unavoidable drops when trying to force 60 FPS.
Should Steam Deck players buy on Steam?
If your priority is handheld play, Steam is the clear buy. The official Steam Deck statement applies to the Steam version, and the best-supported setup so far is built around the Deck-friendly 40 FPS target rather than trying to force a shaky 60.