Wow!!!  This game is the *best* game that I have ever played!  It requires intelligence, common sense, and patience.  The graphics are amazing and the whole concept of this game is just amazing.  YOU HAVE GOT TO PLAY THIS GAME!!!...  The sequel, "Riven" is even better (hard to believe)!!!  The newest sequel that JUST came out is "Exile".  BUY THEM ALL!!! THIS IS THE BEST GAME SERIES OF ALL TIME!!!!!!!