Use crossing equations to replace missing numbers on a miniature three-dimensional math crossword. Play 24 levels in each of three difficulties. The 3D playfield supports touch and mouse, with keyboard controls and optional sound.
How to Play Lacuna Ledger
Choose an empty tile, then pick its value. Equations read left to right or top to bottom. Some tiles belong to two equations. Fill every blank and press Check to verify the ledger. Choose Easy, Medium or Hard, then pick a level. Clear a stage to move on, or use the restart button to replay it.
