The Incredible Gizmo

There are more than 170 hand-made puzzles across nine worlds: the Garage, Basement Lab, Attic Workshop, Garden Test Range, Factory, Space Lab, Underwater Lab, Moon Base, and the Impossible Laboratory, where everything falls up.

The parts are the point. More than a hundred of them, and they genuinely interact rather than merely sitting next to each other: fire lights fuses, fans blow balloons, belts drive gears, water floats crates, and lasers mix into new colours. Most of the fun comes from combinations nobody planned for.

Getting stuck should be interesting, not annoying, so help arrives in stages: a gentle nudge, an X-Ray view showing what every part actually does, a Ghost Start that shows how a working machine begins, and — when you really want it — a full reveal.

The Timeline is the other half of that. Pause, step and rewind to see exactly where the machine went wrong, rather than guessing from the wreckage.

Underneath it all the physics is deterministic: a solution that works once always works. Nothing here is decided by a lucky bounce.

No ads, no chat between players, and nothing to sign up for — which is a deliberate design constraint rather than a feature we forgot to add, because the game is meant to be handed to a child without supervision.

On Android it is free to start: the first two worlds, thirty-two puzzles, plus the Sandbox, the Daily Challenge and the Community Workshop cost nothing, and a single purchase called Full Engineer unlocks every world. On Steam it is the complete game for a one-time purchase, on Windows, macOS, Linux and Steam Deck.