18. Intelligent Qube
System: PS One
Another very straightforward looking puzzle game, Intelligent Qube has you controlling an anonymous avatar trapped on an open plane with cubes pushing you towards an endless void at the stageâ€™s edge at a regular intervals. Highlighting a tile on the gridded surface when a cube is over it will destroy it; since you can only destroy one cube per push forward, the key is to rely on special green cubes that take out whole rows at a time. The catch is that destroying any black cubes mixed in shortens the level. Classical music accompanies your doom in this odd, obscure title.