ksirtet 4:3.5.1-0ubuntu1 (amd64 binary) in ubuntu dapper

Tetris and Puyo-Puyo games for KDE
 This program is a clone of the well known game Tetris. You must fit
 the falling pieces to form full lines. You can rotate and translate
 the falling piece. The game ends when no more piece can fall ie when
 your incomplete lines reach the top of the board.
 .
 Every time you have destroyed 10 lines, you gain a level and the
 pieces fall quicker (exactly the piece falls from a line each
 1/(1+level) second).