Although the technology behind this game is a little dated now, this is still an excellent puzzler for those who like games that don't involve shooting monsters.  Don't get me wrong, I enjoy blowing away bad guys as much as anyone else, but it's nice to play something a little different every once in a while.  This game does not depend at all on weapons or killing anything, nor does it require you to do a lot of jumping or physically manuvering around obstacles.  It is entirely a "thinking" game.  The closest you get to physical action is the fact that some of the puzzles to solve are mazes.