Black Box

A sealed box. An input slot, an output slot. You never see inside.

Line up a few colored gems, send them in, and watch what comes out. Compare. Form a hypothesis. Try an input that would break it. Fewer probes, more stars.

32 levels across five worlds, one new idea each: Echo (it answers), Order (it rearranges), Memory (it remembers), Chain (there are two), Deep (it decides).

No timer. No jokes. Just the quiet pleasure of figuring a system out.

Plays in the browser on phone or desktop. Keyboard: 1-4 pick gems, Backspace undo, Enter probe. Progress saves in your browser.

Also playable at https://blackbox-game-seven.vercel.app