If regular Sudoku puzzles are no longer challenging enough try playing six at once on the faces of a virtual box. Each face is a complete Sudoku puzzle that shares edge values with adjacent faces. Individual faces often cannot be solved without applying information from adjacent faces. Switch faces any time by swiping up down left or right as if you were rotating a box. Every six-sided puzzle has a unique solution consisting of 386 tiles.

The user interface presents a number pad progress bars color-coded faces adjacent face indicators experience levels and more.

Use edit mode to note candidates for each tile.

The undo/redo option allows you to remove or remake changes.

The checkpoint option allows you to save a snapshot of the current puzzle and restore to that point later.

Sudoku Box comes with 75000 unique 6-face puzzles - a total of 450000 9X9 puzzle faces - with five tiers of difficulty.

In-app assistance is available through the use of tokens. 3Doku comes with an initial set of tokens and additional tokens can be purchased via the Play Store. Tokens are not required for normal usage.