Schrodinger’s Cat Burglar is the quantum puzzle adventure you didn’t know you needed — a 3D indie gem where a literal cat burglar named Mittens gets zapped by a quantum experiment and gains the power to be in two places at once. This mind-bending puzzle platformer on Steam plays a bit like Portal, but swaps portal guns for feline superposition, and it’s every bit as clever as that sounds.
At a Glance
- Release Date: 21 MAY 2026
- Genre: Puzzle Platformer / Adventure
- Platform: PC (Steam)
- Developer/Publisher: Abandoned Sheep
- Cost: $17.99 USD (10% launch discount, ends June 4 — normally $19.99 USD)
- Store Link: Get Schrodinger’s Cat Burglar on Steam →
The Story
Mittens is the world’s greatest cat burglar — and the most literal one. When a heist goes catastrophically wrong and she ends up trapped inside a secretive research facility, Mittens stumbles into a quantum experiment that fractures her very existence. She can now split into two simultaneous versions of herself, each one real, each one controllable. Armed with this impossible ability and a burning need to make it home before breakfast, she must navigate twisted test chambers, outsmart security robots, and uncover exactly what this shady lab is hiding — and who (or what) the mysterious Shadow Cat really is.
Core Gameplay Features
1. Quantum Splitting — Be in Two Places at Once
The heart of every puzzle is Mittens’ ability to press a button and split into two cats occupying different positions simultaneously. You control both versions and must coordinate their positions to solve each chamber. The twist: Heisenberg’s Uncertainty Principle applies — when nobody’s watching, Mittens could theoretically be in either location. Being observed collapses that superposition, which opens up entirely new puzzle mechanics around line-of-sight and detection.
- Pass through doors that could theoretically have opened from the other position
- Exploit guard blind spots — what isn’t observed doesn’t technically exist
- Send objects and energy across theoretical spacetime to activate switches and mechanisms
2. Exploration and Hidden Secrets
Beyond the main puzzle path, the facility is packed with bonus content for players who look carefully. Hidden areas reward thorough exploration, sneaky mouse-bot encounters add a stealth layer, and quantum shards scattered throughout provide a trickier challenge for puzzle veterans. The narrative mystery — who built this lab, what are they researching, and what is the Shadow Cat — unfolds through environmental storytelling as you dig deeper into restricted zones.
- Hidden rooms and bonus puzzle areas beyond the critical path
- Collectible quantum shards for an extra challenge layer
- Pest-control robots and security systems that react to observation
3. Local Co-Op and Cat Customisation
A second player can drop in and out at any time for couch co-op, making the quantum puzzles a genuinely collaborative challenge — or a wonderfully chaotic one. Between puzzle rooms, the game offers a surprisingly deep dress-up system: choose from different cat breeds, hats, accessories, and critically, the level of cat chonkiness. Each cosmetic can be applied independently to either quantum position, so your two simultaneous selves can rock completely different looks. Steam Remote Play Together support extends the local co-op to online friends.
- Drop-in/drop-out local co-op throughout the full game
- Steam Remote Play Together for online co-op without additional purchase
- Extensive cat customisation: breeds, hats, accessories, and chonk slider
Who Is This For?
If you loved Portal’s environmental puzzle design and wish someone had filled it with chaotic cats and quantum physics jokes, Schrodinger’s Cat Burglar was made for you. It’s accessible enough for casual puzzle fans — the early chambers introduce mechanics gradually — but the hidden shards and advanced puzzle sections will test experienced players. The local co-op makes it a genuinely great two-player couch game, and the cute-but-smart tone means it works just as well for solo play. Brisbane developer Abandoned Sheep is an independent micro-studio, and this feels like a passion project that quietly over-delivers: it launched to Very Positive reviews on Steam.
Pro Tip
When you’re stuck on a puzzle, stop thinking about where Mittens is and start thinking about where she could be. The quantum mechanic rewards lateral thinking — if your split position could theoretically have triggered a switch or opened a door, the game often lets you act as if it did, even if that version of Mittens is currently being observed elsewhere. Also: yes, there is a cheat code. It’s up, down, top, bottom, strange, charm.
