Every map is new, and every map has an answer.
Maps are generated on the device and solved before you see one, so you are never handed something impossible. They start at six regions and grow two at a time, up to sixty.






Thinking is free. Changing your mind is not.
Painting a region costs nothing. Repainting one costs ink, you carry ten at most, and running out ends the run. Three boosters are there for when a board fights back, and every one of them is earned by playing.
Undo
Puts the last region back and refunds the ink it cost.
8 prismsReveal
Locks one region to its true color and clears whatever clashed with it.
20 prismsWild
Takes any color at all, for a single region, once.
30 prismsPrisms
One for every map solved, three for a perfect one, five more for every fifth perfect solve in a row. Nothing here has to be bought.
earnedTwelve palettes to solve in.
One unlocks every level. Each carries its own surface: cut glass, glazed candy, molten crust, water. Something bright for the train, something quiet for bed.
Twelve achievements and a leaderboard.
From your first solved map to thirty in a single run. Game Center keeps the best score, and turns a run into an activity your friends can take on.
Free to play
Prisms can be bought, but every booster is earned by playing. No ads, ever.
Nothing leaves the device
No account, no tracking, no data collected. Maps are generated offline, so it works on a plane.
Share a run
The best solve of a run becomes a six second clip, rendered in the palette you played it in.
iPhone and iPad
English, German, Spanish, French, Japanese, Russian and Traditional Chinese.