Seven Puzzle

Seven pieces. Turn them, place them, and somewhere along the way — a perfect cube.

Seven Puzzle began as a hands-on teaching tool, used in real gifted-education classrooms in Korea. Korea Education Contents Lab founded Uncut Stone Studio to rebuild the puzzle children learned with their hands — as a game you can carry.

There's no rush. No hearts, no energy bar, no lives to run out. One quiet round before sleep — a little motivation, a small win to end your day.

■ Two challenges, 700 stages • Minimap Challenge, 200 stages — follow the small cube picture, starting with one piece and gradually working up to seven • Coordinate Challenge, 500 stages — read the layer-and-column table and fit all seven pieces • Collect stars to open new sections of the Coordinate Challenge • Short rounds that fit into real life — before sleep, on the train, in a spare minute

■ World Championship • Compete with the world in two disciplines, Minimap and Coordinate • One puzzle a day in each discipline, and seven days to a season • Each day, the three best solvers in each discipline take gold, silver and bronze • World rankings and medal tallies by country

■ Curious about your spatial reasoning? • Spatial Intelligence Report — compare your results with players worldwide whenever you like (optional) • Stamps — twenty-two, collected quietly in your stamp book as you play

■ Anywhere • Dark mode and calm themes that are easy on your eyes at night • The puzzles play offline — on a plane, underground, wherever • Available in 13 languages • One premium purchase (not a subscription) plays ad-free, with hints and exclusive skins

At the end of the day, one quiet puzzle is enough.