Cube Chess - 3D Chess

Chess that also grows upward. Prof. Mono teaches you 3D thinking, the Challenge Tower gives you seven rivals, and every mode plays fully offline.

Chess that also grows upward.

Cube Chess brings Raumschach — a 5x5x5, 125-square variant played on five stacked boards — to your phone. Pieces move forward, sideways, and up and down. The check you never saw coming arrives from below. That surprise is the whole game.

■ Prof. Mono teaches you An interactive tutorial covers everything from the rules to thinking in three dimensions. New to chess? Bad with spatial puzzles? You'll be fine.

■ The Challenge Tower — seven keepers Seven opponents with distinct personalities: the aggressor, the wall, the trickster. Climb one floor at a time through a story mode.

■ Get a little stronger every day Daily mate puzzles, a 12-step learning ladder, a three-strike Puzzle Rush, and forced-mate problems in two difficulty tiers.

■ A level that fits you Three AI strengths plus material handicaps, so your first win is never out of reach.

■ A quiet cosmos to think in Seven glass-and-starlight themes, unlocked as you play.

Everything runs offline. No account, no connection required. Available in 16 languages.

Test the depth of your reading in a quiet cosmos.