Cube Zip: the zip puzzle on a 3D cube

Cube Zip is a number path puzzle wrapped around a cube. Each level scatters numbered tiles over the six faces. Draw a single line from 1 to the last number in order; when the line reaches an edge, the cube turns and the line carries on over the next face.

Flat path puzzles end at the border. On a cube there is no border, so routes can leave one face and come back from another, and every level is a small exercise in thinking in three dimensions.

• Connect 1 to the last number in order and finish on the last number.
• Move only between neighboring tiles; crossing a cube edge turns the cube.
• Never cross your own line.
• × tiles are blocked, and walls stop the line, including walls along cube edges.
• Up to level 200 you may leave tiles empty. From level 201 the line must also cover all open tiles.

The first levels teach the moves on small 3×3 faces. × tiles appear from level 7, walls become more common as you climb, and from level 121 every face grows to 4×4, 96 tiles in all. Each level number gives every player the same cube.

Undo steps back, tapping your line rewinds it to that point, and Find shows where the next number is when it is out of sight on another face. Hints put you back on the route to the next number; free hints refill over time.

Play on the Classic, Glacier or Midnight cube, climb the weekly and all-time leaderboards, and earn badges for levels, perfect solves and day streaks.