Cat Simulator Games: The Design Problem of Playing as an Animal With No Hands

Cat simulator games are built on a problem that sounds trivial and is not: the player character has four legs, no thumbs, no vocabulary, and no interest in your objectives. Every convention modern games rely on assumes a human body. Press a button, open a door. Press another, pick up the gun. Take away hands and speech, and you have removed most of the verbs a designer normally has to work with. What is left is walking, climbing, knocking things over, and making a noise. Somehow that has produced a commercially successful genre.

This is the design story behind that: how animators fake a quadruped, why Stray deliberately deleted its jump button, why almost every animal protagonist ends up with a sidekick, and what happens to a level when the camera sits twenty centimetres off the floor.

Table of Contents

• What Cat Simulator Games Actually Are
• The Animal Protagonist Started as a Joke
• Animating a Cat Is Harder Than Animating a Human
• Stray Removed the Jump Button on Purpose
• No Hands Is the Core Problem in Cat Simulator Games
• Why These Games Keep Selling
• FAQ

What Cat Simulator Games Actually Are

The label covers two different things that get filed together. One is the joke simulator, a physics sandbox where you are an animal and the comedy comes from breaking the environment. The other is the animal-perspective adventure, where the point is to move through a human world that was not built for you and was not designed to notice you.

Both share one structural rule. The cat is never the strongest thing in the room. There is no combat loop worth speaking of, no gear progression, no way to win an argument. Traversal replaces power fantasy. The interesting question stops being “can I kill this” and becomes “can I get up there, and what is behind the thing I just pushed off the shelf”. Anyone who has watched a cat systematically clear a table edge already knows the core mechanic.

That constraint is also why the genre sits closer to stealth and puzzle design than to platforming. You are small, quiet, and mostly ignored, which is a stealth premise. You want an object that is out of reach, which is a puzzle premise. The cat body is the ruleset.

The Animal Protagonist Started as a Joke

The modern lineage starts with prototypes nobody expected to ship. Coffee Stain Studios, a Swedish studio, ran an internal game jam in January 2014 and one team built a deliberately broken goat physics toy in Unreal Engine 3, using a goat model bought from TurboSquid for about twenty-five dollars. A video of the prototype leaked out, the internet reacted, and roughly ten weeks later Goat Simulator shipped on Steam on 1 April 2014. The April Fools’ date was intentional, and the game had earned over twelve million dollars by March 2016.

The cat version arrived on a similar path. Chris Chung built Catlateral Damage as a one-week prototype in 2013, inspired by his childhood cat Nippy. The Kickstarter ran from 16 June to 11 July 2014 and raised around 62,000 dollars. The full game hit Steam on 27 May 2015, and a rebuilt version, Catlateral Damage: Remeowstered, landed on PS4, PS5 and Xbox on 15 September 2021. The entire design is one verb: swipe objects onto the floor, in first person, against a timer.

Japan got there earlier with something stranger. Tokyo Jungle, developed by PlayStation C.A.M.P. and Crispy’s and published by Sony, came out on PS3 in Japan on 7 June 2012. Over fifty playable animals compete in an abandoned Tokyo, marking territory and breeding to keep a bloodline alive. It is an animal game with no cuteness budget at all.

Then Untitled Goose Game made the genre respectable in 2019. Melbourne studio House House started from a stock photograph of a goose someone posted in the team chat. Nico Disseldorp, Stuart Gillespie-Cook, Jake Strasser and Michael McMaster designed it together, and Disseldorp’s explanation of the premise was blunt: “Geese are weird. For some reason everyone has decided that they’re bad animals.” More useful for our purposes is how the team described building the moveset. “The goose’s verbs are the things we thought a goose does: honking, running, moving their neck, flapping their wings.” They wanted control to feel performative, like operating a puppet in front of an audience.

That word, verbs, is the whole discipline. Pick the animal, list what it plausibly does, and refuse to add anything outside the list. It is the same reasoning that shapes tightly defined genres elsewhere, the way a metroidvania is defined by what it withholds rather than what it grants.

Animating a Cat Is Harder Than Animating a Human

Players tolerate a lot of nonsense from human animation. Nobody runs like a video game character, and nobody complains. Cats are different, because a large part of the audience has a reference animal asleep on the sofa. Get the shoulder blades wrong and people notice without being able to say why.

BlueTwelve Studio, the small French team in Montpellier that made Stray, has said as much: animating a quadruped is already difficult, and the subtleties of a cat’s movement are precise and hard to convey properly. Their solution was not a motion capture stage. It was a cat in the office. Oscar, a Sphynx, roamed, jumped and climbed around the studio while animator Miko watched. The lack of fur was the point, because on a hairless cat you can see the actual skeleton and muscle working underneath.

Direct registering, the gait you never noticed

Cats walk using direct registering. Each hind paw lands almost exactly in the print the corresponding front paw just left. The result is a single-file line of tracks instead of four separate lines, which is why cat prints in snow look like one animal walking on two legs.

The reason is practical. The front paw tests the ground, the hind paw reuses a surface already confirmed to be quiet and stable. For a stalking predator that means fewer snapped twigs, better traction on narrow ledges, and less energy spent checking terrain. For an animator it means the walk cycle cannot be a generic four-legged shuffle. Get the hind foot placement wrong and the cat reads as a small dog.

Inverse kinematics does the rest

Hand-authored animation cannot cover every surface a cat will stand on. Modern engines handle this with inverse kinematics, where the animator specifies where the paw must end up and the system solves backwards for the joint angles that put it there. Raycasts probe the geometry under each foot, and the legs adjust so a cat standing on a sloped pipe does not float or sink into it.

Quadrupeds are usually modelled as two connected leg frames, front and rear, linked through the spine, each solving foot placement semi-independently. Faster gaits change stride length and timing procedurally rather than swapping to a new clip. It is the same family of runtime generation that powers procedural content systems, applied to a skeleton instead of a map.

Stray Removed the Jump Button on Purpose

Stray began life in 2015 as HK Project, was revealed publicly in June 2020, and shipped on 19 July 2022 for PS4, PS5 and Windows, published by Annapurna Interactive and built in Unreal Engine 4. The Unreal Engine developer interview published around launch was titled “28 people and two cats”, which is a fair summary of the studio. As late as the end of 2017 the team was around five people.

The most argued-about decision in the game is that there is no free jump. You cannot leap wherever you like. Approach a ledge, a crate or a pipe and a prompt appears at the edge, following your position as you walk along it, and pressing the button executes a clean animated jump to that spot. You never miss.

BlueTwelve has been direct about the reasoning. In platform games, when you have to measure the size and depth of a jump, you always get misses and close calls, and that is not the fantasy anyone has of how a cat moves. A cat does not fluff a jump onto a bookshelf and slide down the spines. The team wanted efficiency instead, a cat able to reach the top of a building in roughly twenty seconds without the player having to think hard about it.

What the design trades away

The cost is real. Removing failure removes tension and removes skill expression, and a chunk of players found the traversal closer to guided animation than to play. What it buys is that the cat always looks like a cat. There is no equivalent of a hitbox mismatch where the animation says one thing and the collision volume says another, because the destination is chosen before the animation starts.

It is a legibility decision more than a difficulty decision. The genre sells the fantasy of feline competence. A jump you can whiff destroys that fantasy in one frame.

No Hands Is the Core Problem in Cat Simulator Games

Here is where the genre gets structurally interesting. A cat cannot carry an inventory, read a sign, open a locked door, or talk to a character who has information you need. Those four things are load-bearing in nearly every adventure game ever made. Cat simulator games have to route around all of them.

The drone that carries the inventory

Stray solves it with B-12, a small flying drone that attaches to the cat’s back. B-12 translates the language of the robot inhabitants, stores collected items, provides light in dark areas, and hacks the machinery the cat physically cannot operate. Every capability B-12 has maps exactly onto a capability a cat lacks. The drone is not a companion character bolted on for narrative warmth, it is the missing verb set given a body.

Little Kitty, Big City takes the lighter route. Double Dagger Studio, founded by Matt T. Wood and inspired by his cats Mario and Roxy, shipped it on 9 May 2024 for Switch, PC and Xbox, with PlayStation versions a year later. There is no inventory system to speak of. The cat carries one shiny object at a time in its mouth and trades it to a crow for hats. Manholes handle fast travel because a cat cannot read a map. Nothing in the design pretends the animal has hands.

The camera sits twenty centimetres off the ground

Lowering the camera to cat height wrecks normal level design assumptions. Sightlines vanish. Landmarks used for navigation sit above the horizon and disappear. A kerb becomes a wall. Environment artists have to make the underside of furniture, the tops of air conditioning units and the gaps between pipes as detailed as the walls, because that is what the player looks at for hours.

It also changes what the world says about itself. From two centimetres above the pavement in Stray, the slums read as enormous and unknowable, which does the environmental storytelling for free. Real cats have their own version of this, a wide field of view and strong low-light sensitivity that we do not share, and the science of feline vision explains why a cat’s world is not a shorter copy of ours.

Why These Games Keep Selling

The commercial case stopped being speculative some time ago. Stray peaked at 62,963 concurrent players on Steam on launch day, the biggest launch Annapurna Interactive had recorded, and third-party estimates put it in the region of 2.5 million copies inside the first month. It won Best Independent Game and Best Debut Indie Game at The Game Awards 2022 from six nominations, took PlayStation Game of the Year at the Golden Joysticks, Best Debut at the Game Developers Choice Awards, and Most Innovative Gameplay at the Steam Awards. Annapurna Animation announced an animated feature adaptation on 5 September 2023. Ports kept arriving, Switch in November 2024, Switch 2 in May 2026.

Little Kitty, Big City passed 100,000 sales within two days of release, helped by a day-one Game Pass slot, and settled around the high seventies on Metacritic. These are not accidents of marketing. Low-stakes traversal games with an animal lead sit in the same comfort category as the cozy games with no combat that have quietly taken over a large slice of the indie market, and the genre has become a reliable entry on any list of indie games worth playing.

There is a second effect the numbers do not capture. BlueTwelve noticed that cats in the studio reacted to the game, responding to the meows and the on-screen movement. When the target audience’s own pets sit up, the animation is probably right.

FAQ

What is a cat simulator game?

A game where the player character is a cat with no human abilities. It splits into physics comedy sandboxes like Catlateral Damage and exploration adventures like Stray and Little Kitty, Big City. The shared rule is that traversal and mischief replace combat and progression.

Does Stray have a jump button?

Not a free one. Jumps are contextual: a prompt appears when you are near a valid surface and the jump is executed as a scripted animation, so you cannot miss. BlueTwelve chose this because missed jumps and close calls do not match how anyone imagines a cat moving.

Which real cats inspired Stray?

The protagonist was based on Murtaugh, a cat found as a stray under a car near Montpellier and adopted by two of the studio’s founders. Riggs and Jun also belonged to the team, and Oscar, a Sphynx, supplied the jumping and climbing reference precisely because his lack of fur made the movement visible.

Why do animal games always add a companion character?

Because the animal cannot talk, read or carry things, and most adventure design depends on all three. B-12 in Stray handles translation, storage, light and hacking. The companion is a design workaround before it is a story choice.

What was the first cat simulator?

Depends on the definition. Catlateral Damage began as a 2013 prototype and is the first thing widely called a cat simulator, but animal-perspective games predate it, including Tokyo Jungle on PS3 in June 2012 with its fifty-plus playable species.

The Cat Is the Interface

Cat simulator games work because the restriction is the design. Take away hands and you get puzzles about reach. Take away speech and you get a drone, a crow, or a honk. Take away the free jump and you get an animal that always lands correctly, which is the entire promise of the fantasy. The genre found something most games avoid: a protagonist defined by what it cannot do. For a broader tour of feline characters across four decades, see our history of cats in video games. Then go apologise to whatever is currently sitting on your keyboard.

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