If someone told me a few years ago that my favorite first-person shooter of 2026 would star a cartoon rodent, I would have laughed. Yet, here we are in late April, and I have spent an embarrassing amount of hours completely mesmerized by Mouse: P.I. For Hire.

Released last week on April 16 by Polish developer Fumi Games and publisher PlaySide Studios, this indie title accomplishes something genuinely incredible. It takes the lightning-fast, aggressive combat of a classic boomer shooter and wraps it in the hand-drawn, rubber-hose animation style of the 1930s.

If you are wondering whether this game is just a cool visual gimmick or a legitimately great shooter, grab your fedora and let us dive into the gritty streets of Mouseburg.

A Jaw-Dropping Visual Masterpiece

Let us get the obvious out of the way first: the art direction is absolutely phenomenal. We have seen games tackle the 1930s aesthetic before, but Fumi Games translates this historically 2D art form into a fully three-dimensional, first-person environment.

The entire world is presented in grainy black and white. Every character bobs and weaves with that signature retro bounce, making Mouseburg feel like a vintage Fleischer Studios cartoon brought to life. But the real magic lies in the combat animations. The developers baked the aesthetic right into the action:

• Explosive Finishers: Hit a goon with dynamite, and they will do a wildly exaggerated, wide-eyed freakout before turning into a blinking pile of ashes.
• Melting Foes: Use the acid launcher, and enemies will comically melt into a puddle.
• Environmental Gags: The backgrounds are stuffed with fun, cartoonish details that give the seedy noir city incredible charm.

Gunplay and Mechanics

You play as Jack Pepper, a hard-boiled private investigator and war veteran who is up to his neck in debt. Brilliantly voiced by Troy Baker, Jack navigating the criminal underworld anchors the game’s absurd visual style in a surprisingly compelling noir story.

But do not let the cute exterior fool you. Mouse: P.I. For Hire is an aggressive, forward-pushing arena shooter. If you enjoy the frantic pacing of Doom, you will feel right at home.

Jack is incredibly nimble. You can chain dashes, double-jump out of tight corners, and even use your tail as a grappling hook to swing across combat arenas. The weapon variety keeps things incredibly fresh. You start with standard revolvers and punchy shotguns, but quickly unlock bizarre gadgets and acid launchers. Ammo is kept relatively scarce, forcing you to constantly swap weapons or rely on highly satisfying melee kicks and punches to get out of trouble.

“Mouse: P.I. For Hire is a triumphant love letter to classic animation and old-school shooters. It is violent, jazzy, and dripping with personality.”

The Detective Noir Framework

When you are not blasting your way through cultists and corrupt cops, the game leans into its detective framework. Between missions, Jack heads back to his office and the local hub area. Here, you can chat with the locals, take on side quests, upgrade your gear, and even play a surprisingly fun baseball card mini-game at the local bar.

The only slight disappointment comes from the actual sleuthing. For a game about a private investigator, the investigation segments hold your hand a bit too tightly. Clues are automatically pinned to your board, and the game explicitly tells you exactly where to go next, removing some of the brainwork you might expect from a noir mystery.

The Verdict: By the Numbers

To help you decide if it is worth the download, here is a quick breakdown of how the game performs.

Feature	The Good	The Bad
Visuals & Art Style	Groundbreaking 3D rubber-hose animation.	The monochromatic palette can make navigating dark areas tricky.
Combat Loop	Fast, fluid, and incredibly satisfying weapon variety.	Aiming feels slightly loose compared to modern competitive shooters.
Soundtrack	An upbeat, big-band jazz score that perfectly fits the mood.	Enemy banter occasionally repeats during long encounters.
Narrative	Troy Baker delivers a fantastic, hard-boiled performance.	The puzzle-solving elements are far too easy.

Final Thoughts

Mouse: P.I. For Hire is available across practically everything: PC, PS4, PS5, Xbox Series X/S, and the brand-new Nintendo Switch 2. While the aiming can feel a bit loose and the detective puzzles lack depth, the sheer joy of the combat loop completely makes up for it. Fumi Games took a massive creative risk by blending 1930s cartoon whimsy with gritty, M-rated FPS violence, and it paid off beautifully.

If you are looking for a shooter that breaks the mold of modern military titles, Jack Pepper is a private investigator you absolutely need to hire.