Eight players have reviewed Schrodinger’s Cat Burglar on Steam. Eight of them gave it a thumbs up. That’s a sample size so small it’s barely a blip, but Steam’s curators handed it a Featured Win anyway — and the pitch is genuinely clever.

Developed by Abandoned Sheep and released today, Schrodinger’s Cat Burglar builds its puzzles around quantum mechanics. The central hook: at the press of a button, your cat Mittens splits into two controllable clones. Nobody’s looking? She can exist in both places simultaneously. Someone observes her? Things get, as the developer puts it, “theoretical.” The game literally obeys Heisenberg’s Uncertainty Principle as a gameplay mechanic.

The Steam page calls it “Portal with cats,” which is a bold comparison to print on your own store listing. But early players are backing it up. One reviewer with half an hour played described it as feeling “akin to some of the great puzzle games of the xbox 360 era” — high praise from someone who hasn’t even cleared the tutorial. Another with 14 hours logged called it a thinking game that weaves real quantum theories into its puzzles, with customization options including custom hats, cat breeds, and a slider for “level of cat chonkiness.”

Abandoned Sheep confirmed the key art is hand-painted by artist Tom Williams, explicitly noting the studio uses no generative AI and never will — a stance worth highlighting in 2026.

At 87 concurrent players, this isn’t topping any charts. But a Featured Win on day one with a 100% review floor? That’s the kind of launch indie developers dream about. The game supports drop-in local co-op, Steam Remote Play Together, and a native Linux build optimized for Steam Deck.

Schrodinger’s Cat Burglar is available now on Steam for $17.99 (10% launch discount from $19.99). A demo is also available if you want to test the quantum waters before committing.

Sources