Tangram is based on the ancientChinesegame of the same name. The player has to rotate seven geometric forms to arrange them on top of a colored area. This area must be precisely covered in the allotted time. The game includes a total of 200 puzzles of varying complexity. Score is calculated based on remaining time. In the bonus round, identical blocks must be matched, again more points are awarded the quicker the round is cleared. Password system is also included.