SIRTET

SIRTET is a variant of Tetris. The object is to fill complete horizontal lines with the pieces that drop from the top of the screen by rotating the pieces and dropping them on the playing field. SIRTET differs from Tetris in that it does not offer the standard set of seven tetrominoes. Instead, the player select which of nine different pieces can drop. Additionally, the play may configure several other options, including the speed with which pieces drop and the size of the playing field.

The player scores by dropping a piece before it reaches the bottom. SIRTET keeps a 'hall of fame' recording the 20 highest scores.