Mouse: P.I. For Hire‘s rubber hose cartoon art style brings it a whole lot of absurd, slapstick humor, which pairs perfectly with its “boomer” shooter gameplay. But underpinning it all is a noir detective story that can be dark and adult as well as goofy and comedic, giving Mouse a fascinating depth that goes beyond its toon inspirations.

I recently went hands-on with an early level from Mouse: P.I. For Hire and got a sense of its fast-paced combat, twitchy boss battles, and underlying narrative that mixes noir detective elements and slapstick humor. 

In search of a mad scientist

The preview level I played sent protagonist private eye Jack Pepper to the hidden laboratory of Steve Bandel, a magician and friend of Jack’s who also appears to be a mad scientist. Bandel has gone missing, so Jack follows up on a tip to find the secret lab — accessed by taking an elevator hidden in an outhouse in the middle of the woods.

The lab itself is swarming with strange cultists, armed with weapons ranging from tommy guns and pistols to clubs and wooden shields. Like the shooters Mouse draws its inspiration from — games like Doom, BioShock, and Quake — your best defense is to always be moving. Jack can employ a quick dash move when you press R3 or a slide with L3, giving you a momentary burst of speed to dodge incoming attacks, and a double-jump on the X button that can help you take advantage of the verticality of most arenas. When you need a little space, hitting Circle lets you kick enemies to push them back.

Jack’s arsenal gives you a number of options for dealing with enemies, ranging from his fists to a semi-automatic pistol, the tommygun-like “James Gun,” and a powerful double-barrel shotgun. Each one can be upgraded between levels to power them up and add alternate fire modes. You can also fling sticks of dynamite at enemies and find special power-ups within levels, like a hot pepper that adds fire damage to your weapons for a short period.

And not long into your investigation, you uncover something Bandel must have been working on — a new gun called the Devarnisher. This weapon fires turpentine rounds that deal damage to enemies over time, eventually melting the ink right off their bones.

Bot Betty bosses

The level included three different boss fights. Each boss was a robotic version of Betty, Bandel’s former assistant from his magician days. You learn that Bandel attempted to recreate Betty after her death, and as Jack comments, he got a little weird with it. Each version of Betty is more complete than the last, bringing different elements into the fight before they all culminate in the most complete Robo-Betty, the final boss of the level.

Like with fights against other enemies, speed, positioning, and quick reactions are essential when battling Mouse: P.I. For Hire’s bosses. But unlike other fights, the arenas are more constrained, so it’s a lot tougher to get away from enemy attacks. 

Jack’s dash is key to survival in tough fights. It can get him clear of the “gamma ray” laser beams wielded by the first Robo-Betty, or the devastating blades attached to the arms of the second.

The final boss fight brings it all together, with a Robo-Betty that’s fast, aggressive, and capable of dishing out cartoon bombs that will chase you around the arena while she tries to get in close and pummel you. Every so often, she’ll activate the gamma ray attack the first Betty employed, forcing you to hide from it behind a glass wall to avoid getting zapped. During that time, you have a chance to find and hit a button on the wall to blast Betty with a laser of your own, briefly disabling her and allowing you to unload on the bot until it’s destroyed.

A serious story in a cartoon world

Between the goofy animations that come with defeating enemies, absurd jokes like a sign marking a “Totally Normal Wall,” and the bounciness of everything from ammo pickups to your own weapons, cartoon-style comedy is baked into every element of Mouse: P.I. For Hire.

The level was also loaded with secrets, which often hide items that give you insights about the city of Mouseburg where the game takes place, and the political strife affecting its residents. To unlock safes and padlocks to find those secrets, you’ll have to use your tail to trip each lock’s tumblers.

The combination of elements creates a fun tone that’s both absurd and thoughtful. The story itself seems to be a complex one, drawing on noir tropes and ideas and bringing a twinge of adult-oriented thinking to the hilarious world. While Jack’s willing to throw out one-liners, he’s also thoughtful about the information and clues he’s coming across.

Searching for clues

Completing the lab earns you a clue about what happened to Bandel, but it’s just a piece of the puzzle. As the level wraps up, we get a look at Mouse’s world map, full of Mouseburg locations that will presumably house other levels.

In the center is Jack’s PI agency, and returning allows you to wander around the block, where you can visit other characters and upgrade your weapons.

In the office, you can put all the clues you uncovered on Jack’s case board, where hopefully, the picture of the case will start to come into focus. The preview build didn’t give much of a sense of how the investigation portion of the game works, but it’s clear from the story that you’ll be talking to a lot of characters to gather information and pick up leads, developing the case over time.

While the preview level I saw was mostly focused on gunplay, it also highlighted how much attention Mouse: P.I. For Hire is dedicating to its story. Between noir-style narration from Jack, journals and clues you’ll find that tell the story of each level, and characters you’ll meet who provide more insights into the politics and intrigue happening in Mouseburg, Mouse: P.I. For Hire looks to be delivering a deep, twisting mystery.

You can start hunting for clues when Mouse: P.I. For Hire releases on April 16 on PlayStation 5.