MOUSE: P.I. For Hire

- Developer
- Fumi Games
- Publisher
- PlaySide
- Released
- Apr 16, 2026
- Steam reviews
- 94% of players recommend it, from 15,952 reviews — Steam calls that “Very Positive”
- Tags
- ActionIndie
On Linux, Steam Deck and Steam Machine
This game runs perfectly out of the box under Proton, per ProtonDB reports (94 reports). Valve rates it Deck Verified.
Valve rates it Verified on Steam Machine. Valve marks it SteamOS Compatible.
Proton tier: ProtonDB · Deck rating: Valve · Steam Machine, Steam Frame and SteamOS ratings: Valve · Compare 2,053 games · Every game Valve rated for Steam Machine
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About this game
The developer's description, from the game's Steam store page.
MOUSE: P.I. For Hire is an action-packed first-person shooter that draws inspiration from the classic cartoons of the 1930s. Its black and white rubber hose visuals are drawn by hand, frame by frame, delivering a striking vintage aesthetic. Unravel layers of corruption with a thrilling noir-fueled detective story, lively environments to explore, an original big band jazz soundtrack, and a fully-loaded arsenal of cartoon weapons and devastating power-ups.
Meet Private Investigator Jack Pepper, a former war hero-turned-detective in a world where danger lurks even in the smallest mouse hole. Uncover the truth when a simple missing persons case quickly escalates into a complex web of intrigue, with corruption, kidnapping and murder all on the docket. Investigate the seedy underbelly of Mouseburg, battle heavily armed gangs and crooked cops, and discover clues to reveal the conspiracy buried underneath the surface.
From crackling machine guns to explosive firepower, each weapon in Pepper’s arsenal is designed to deploy non-stop cartoon chaos. Arm yourself with an array of classic, creatively twisted and experimental firearms, and consume powerful upgrades when you need that extra spinach-loaded punch! Lethal encounters and manic boss battles await in this boomer shooter-inspired, retro-vibed adventure - and the denizens of Mouseburg never go down without a fight.
Explore a diverse city playground, from dark streets to classic film studios, opulent opera buildings, poisonous swamps and underground sewers. With a myriad of cases to solve and collectibles to find, Mouseburg is truly a detective’s delight! Use every tool at your disposal to wall-run, grapple-hook and double-jump through this unrelenting cartoon world.
- Black and white, hand-drawn rubber hose animation, inspired by cartoons of the 1930s
- Fast-paced FPS combat, where constant movement is key
- A thrilling single-player campaign that unravels a complex web of crime and corruption
- Over 20 noir-infused levels, teeming with mice, rats and shrews
- Fully-loaded arsenal of over ten unique weapons and equipment - with a cartoon twist
- Devastating consumable power-ups, capable of turning the tide of any battle
- Unlockable movement abilities and Metroidvania-inspired level traversal
- Original jazz soundtrack, featuring a big band orchestral ensemble
System requirements
As Steam lists them.
Windows
Minimum
- Requires a 64-bit processor and operating system
- OS
- Windows 10 64-bit
- Processor
- Intel Core i3 8300 / Ryzen 3 2200
- Memory
- 12 GB RAM
- Graphics
- GeForce GTX 960 / Intel Xe 2 Graphics / Radeon RX 580
- DirectX
- Version 11
- Storage
- 11 GB available space
- Additional Notes
- VRAM: 6 GB
Recommended
- Requires a 64-bit processor and operating system
- OS
- Windows 11
- Processor
- Intel Core i5 9600 / Ryzen 3600
- Memory
- 16 GB RAM
- Graphics
- GeForce RTX 3060 / Intel Arc B570 / Radeon RX 7600
- DirectX
- Version 11
- Storage
- 11 GB available space
- Additional Notes
- VRAM: 8 GB
Downloadable content
Steam lists 3 items of downloadable content for this game.
News
What MOUSE: P.I. For Hire's studio and the outlets Valve syndicates on Steam have said recently.
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