MOUSE: P.I. For Hire – Before You Buy
Everything You Need to Know
What happens when you take 1930s rubber hose cartoons, film noir detective fiction, and DOOM-style shooter mechanics, then throw them into a blender? You get MOUSE: P.I. For Hire — one of the most visually distinctive and genuinely fun shooters of 2026.
But is style enough, or is there substance behind the ink? This guide breaks down the gameplay, what critics love, what holds it back, and whether this noir-soaked FPS belongs in your library.
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What Is MOUSE: P.I. For Hire?
MOUSE: P.I. For Hire is a story-driven first-person shooter developed by Fumi Games and published by PlaySide Studios. Set in the fictional city of Mouseburg — a corrupt, jazz-fueled metropolis populated entirely by anthropomorphic mice — the game casts you as Jack Pepper (voiced by Troy Baker), a former war hero turned private investigator. When a simple missing persons case spirals into a web of corruption involving crooked cops, mob bosses, charming socialites, and shadowy politicians, Jack has to shoot, punch, and investigate his way to the truth.
The game’s hand-drawn black-and-white rubber hose animation is its immediate calling card. Every frame is crafted to look like an interactive 1930s cartoon, drawing clear comparisons to Cuphead while carving out its own identity through noir storytelling and first-person action. MOUSE originally started as a tech demo that went viral in 2023, and it’s now a fully-fledged game that launched on April 16, 2026.
It’s available on PC (Steam), PlayStation 5, Xbox Series X|S, and Nintendo Switch 2. The Xbox version supports Xbox Play Anywhere. It’s built on the Unity engine and is Steam Deck Verified out of the box.
What MOUSE Gets Right
An Art Style That Stops You in Your Tracks
There is nothing else that looks like MOUSE: P.I. For Hire. The entire game is rendered in hand-drawn, frame-by-frame black-and-white animation inspired by 1920s and 1930s cartoons — think Steamboat Willie meets Max Fleischer meets The Maltese Falcon. Every level, character, and enemy bursts with style and personality. Heads pop off in slapstick fashion from shotgun blasts, animated bullet trails zip across the screen, and the environments are packed with vintage-era detail.
PC Gamer called it the best shooter they’ve played in ages. Multiple reviewers noted that there’s rarely a single frame that isn’t visually captivating. The art direction doesn’t just serve as a gimmick — it informs the entire tone and atmosphere, making combat encounters feel like playable cartoon chaos in the best possible way.
Fast, Fluid DOOM-Inspired Combat
Beneath the vintage aesthetic lies a genuinely solid retro-style FPS. Movement is fast and fluid, clearly inspired by 2016’s DOOM. Perpetual motion is key to survival — you’re strafing, dashing, double-jumping, and wall-running through arenas packed with mobsters, crooked cops, and cultists. The gunplay feels punchy and satisfying, with an arsenal that includes a six-shooter called the Mouser, a Tommy Gun dubbed the James Gun, a shotgun known as the Boomstick, a Carcano rifle, dynamite, a hammer, and more creative cartoon weaponry.
Weapons can be upgraded at B.A.N.G. terminals (Ballistics, Augmentation, and Noteworthy Gains) using blueprints found throughout levels. Vending machines scattered across Mouseburg dispense Fantastic-o-Matic power-ups that let you customize your approach to combat. The combination of fast movement, varied weapons, and upgrade systems keeps the action engaging across the campaign’s 24 missions.
A Charming, Well-Written Detective Story
The noir narrative is more than window dressing. Jack Pepper’s investigation starts simple and escalates into a genuinely twisty tale full of genre-appropriate betrayals, femme fatales, and morally gray characters. The writing embraces hardboiled fiction cliches with self-aware humor — there are cheese puns aplenty — while still delivering stakes that keep you invested. Troy Baker’s performance as Jack Pepper is a highlight, bringing gravelly charisma to every line of narration and dialogue.
Side quests received from Mouseburg’s residents expand on Jack’s personal relationships and feature some of the funniest writing in the game. Game Informer noted these optional missions are genuinely worth seeking out for the character development alone.
Excellent Soundtrack and Audio Design
The original big band jazz soundtrack, composed by Patryk Scelina and performed by a full orchestral ensemble, is outstanding. It perfectly complements the 1930s setting and adds genuine energy to both exploration and combat. The soundtrack also features a track by French jazz band Caravan Palace. Between the music, the voice acting, and the period-authentic sound design, MOUSE absolutely nails its audiovisual presentation.
Exploration Rewards Curiosity
Levels are surprisingly large and packed with secrets. Collectible newspapers, baseball cards, comic strips, bobbleheads, and hidden areas are scattered throughout each mission. Baseball cards feed into a turn-based card mini-game at a bar in Mouseburg — a surprisingly addictive side activity that Game Informer admitted to losing hours on. Unlockable traversal abilities open up new areas and encourage thorough exploration of each environment.
Where MOUSE Falls Short
Enemy Variety Is Limited
This is the most consistent criticism across reviews. Despite the excellent gunplay and movement, enemies largely fall into two categories: melee attackers who rush you, and ranged enemies who stand still and shoot. While combat stays fun thanks to the movement system and weapon variety, fighting the same types of enemies throughout the campaign can feel repetitive by the later missions. Boss fights, by contrast, are varied and creative, requiring different strategies for each encounter.
The Detective Work Is Surface-Level
Despite casting you as a private investigator, MOUSE doesn’t let you do much actual detecting. The investigation elements are largely scripted — you follow markers, collect clues, and watch the story unfold rather than using deduction or intuition to crack cases yourself. If you’re hoping for a detective game with meaningful investigative mechanics layered on top of the shooter gameplay, you’ll find the PI aspect more cosmetic than substantive.
No Level Replay or New Game Plus
Once you leave an area, you cannot return. There’s no level select after completion, and no New Game Plus mode. This means any missed collectibles, side quest items, or secret areas stay missed until you start an entirely fresh playthrough. For completionists, this means being thorough on your first run is critical. This is a notable omission that several reviewers flagged, and the developers have acknowledged community interest in adding level replay in a future patch.
The Final Act Loses Some Steam
Multiple reviewers noted that the campaign’s pacing dips in its final stretch. The last section feels more drawn out and less inventive than the excellent middle chapters. It doesn’t ruin the experience, but it leaves the ending feeling slightly less punchy than the game’s strongest moments.
Performance and System Requirements
Built on Unity, MOUSE is lightweight and well-optimized. The stylized art direction means it doesn’t need brute-force hardware to look incredible.
PC Minimum Requirements (1080p / 60 FPS / Medium)
- OS: Windows 10
- CPU: Intel Core i5-9500 / AMD Ryzen 5 3400
- GPU: NVIDIA GTX 1060 / AMD RX 580 (6GB VRAM)
- RAM: 12 GB
- Storage: 11 GB (HDD supported)
PC Recommended (1440p / 60 FPS / High)
- CPU: Intel Core i5-9600 / AMD Ryzen 5 3600
- GPU: NVIDIA RTX 3060 / Intel Arc B570 / AMD RX 7600 (8GB VRAM)
- RAM: 16 GB
- Storage: 11 GB (SSD recommended)
PC Ultra (4K / 120 FPS)
- CPU: Intel Core i7-13700 / AMD Ryzen 5700X3D
- GPU: NVIDIA RTX 4070 / AMD RX 7900 XTX (10GB VRAM)
- RAM: 16 GB
- Storage: 11 GB (SSD recommended)
Key Notes
- Steam Deck Verified — runs at 800p/40 FPS with default settings
- PS5 and Xbox Series X target 60 FPS
- Nintendo Switch 2 is supported at launch
- Xbox Play Anywhere support (buy once, play on Xbox and PC)
- File size is only 11-15 GB depending on platform — refreshingly small
- The minimum spec is remarkably accessible, with even a GTX 1060 hitting 60 FPS at 1080p
Review Scores at a Glance
MOUSE: P.I. For Hire launched to an 81 on Metacritic and an 83 on OpenCritic, with a “Strong” recommendation. Steam user reviews sit at Overwhelmingly Positive (96% positive). Individual scores range from several 9s and 9.5s to a handful of 6s and 7s.
The critical consensus is that the art style is extraordinary, the gunplay is satisfying, Troy Baker’s performance is excellent, and the overall package delivers far more than its mid-range asking point might suggest. The main criticisms center on limited enemy variety, shallow detective mechanics, and the lack of level replay. Multiple outlets have called it one of the most refreshing shooters of 2026 and a standout indie success story.
Who Should Buy MOUSE: P.I. For Hire
Buy it if you:
- Love retro-style FPS games (DOOM, Ion Fury, Cultic, Prodeus)
- Are drawn to the 1930s cartoon aesthetic and noir storytelling
- Enjoy fast, fluid shooters with satisfying gunplay and movement
- Appreciate handcrafted indie games with genuine personality and passion
- Want a focused 10-15 hour campaign that respects your time
- Own a Steam Deck or Switch 2 and want a great portable shooter
Wait or skip if you:
- Need deep enemy variety and complex AI encounters to stay engaged in a shooter
- Want meaningful detective or puzzle-solving mechanics, not just a detective-themed story
- Must have New Game Plus or level replay to feel satisfied with a purchase
- Prefer realistic, grounded shooters over stylized arcade-style action
- Are looking for a long, sprawling campaign (this is 7-15 hours, not 30+)
The Verdict
MOUSE: P.I. For Hire is proof that style, when executed with this much passion and craft, absolutely is substance. Every frame of this game radiates love for the animation era it’s paying tribute to, and the DOOM-inspired combat underneath is sharp enough to back up the presentation. Troy Baker’s Jack Pepper is immediately iconic, the jazz soundtrack is infectious, and the noir detective story is a thoroughly entertaining ride even when its investigative mechanics are skin-deep.
It’s not a long game, and it doesn’t have the enemy variety or replay infrastructure of the genre’s absolute best. But what it does, it does with the kind of style and confidence that makes you grin the entire way through. In a year packed with massive open-world epics, MOUSE stands out by being exactly what it wants to be: a focused, handcrafted, endlessly charming cartoon shooter that’s over before it overstays its welcome.
If the art style grabbed you even once in a trailer, buy it. You won’t regret it.
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Frequently Asked Questions
Is MOUSE: P.I. For Hire multiplayer?
No. MOUSE is a fully single-player experience with no co-op or multiplayer.
How long is MOUSE: P.I. For Hire?
The main story takes approximately 7-9 hours on a straight playthrough. Engaging with side content, collectibles, and exploration extends it to 10-16 hours. Full completionist runs with all achievements push toward 20-25 hours.
What platforms is MOUSE: P.I. For Hire available on?
PC (Steam), PlayStation 5, Xbox Series X|S, and Nintendo Switch 2. The Xbox version supports Xbox Play Anywhere, meaning a digital purchase works on both Xbox and PC.
Is MOUSE on Steam Deck?
Yes. MOUSE is officially Steam Deck Verified and runs at 800p/40 FPS on default settings.
Can I replay levels?
No. Once you complete a level, you cannot go back. There is no level select or New Game Plus mode at launch. The developers have acknowledged this feedback and may address it in a future update.
Is there DLC coming?
Yes. A DLC expansion has been announced and will be a new story separate from the main campaign. It will be available on all platforms.
Is MOUSE: P.I. For Hire like Cuphead?
The art style draws from the same 1930s animation era, but the gameplay is completely different. Cuphead is a 2D run-and-gun/boss rush game. MOUSE is a first-person shooter with DOOM-inspired movement, weapon upgrades, and a full detective noir narrative. They share an aesthetic DNA but play nothing alike.
Who voices Jack Pepper?
Troy Baker, known for his roles in The Last of Us, BioShock Infinite, and dozens of other major games, voices the protagonist Jack Pepper.
What editions are available?
The Standard Edition includes the full game. The Digital Deluxe Edition (Steam exclusive) adds the full original soundtrack featuring composer Patryk Scelina and a track by Caravan Palace.
MOUSE: P.I. For Hire is rated T for Teen by the ESRB for Blood, Mild Language, and Violence.
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