X11 block dropping game in 3 dimensions.

The grand father of this game is Tetris, its father is Blockout on
PC/DOS.  The player must place 3D pieces by translations and rotations
in order to fill the game floor.  The game is realtime and the speed
increases with the player skill.

WWW: http://www710.univ-lyon1.fr/ftp/xbl/xbl.html