Seven Puzzle: Soma Cube 3D

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 timer, no lives, no failure. One quiet round before sleep — a little motivation, a small win to end your day.

■ The game
• 200 stages — starting with a single piece, slowly deepening to the full seven-piece cube
• A true spatial puzzle: read the blueprint, rotate the pieces, imagine the empty space
• Short rounds that fit into real life — before sleep, on the train, in a spare minute

■ If you're curious — your spatial reasoning, measured
• Spatial report — see where your solving stands among players worldwide, whenever you want (16+, optional)
• Merit stamps — your play, collected quietly in a stamp book

■ It stays out of your way
• No timers, no energy systems, no forced interstitials
• Ads are limited to a quiet banner and rewarded ads you choose to watch
• One premium purchase (not a subscription) removes ads entirely and unlocks exclusive themes

■ Anywhere
• Dark mode and calm themes that are easy on your eyes at night
• Full offline play — on a plane, underground, wherever
• Available in 12 languages

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

Seven Puzzle is a soma cube brought to your screen — a 3D block puzzle you solve by turning and fitting wooden-style pieces.