Spent many a sleepless night playing this game.  They *finally* got it right!  If you ever thought you could build the best roller coaster and wanted to see what it's like to actually ride it, you gotta get this game.  It's so much fun to walk around in "camcorder" mode and check out  the park you've built.  Plus, getting on a ride and watching all these  doe-eyed, chubby-cheeked kids screaming their heads off... too funny!  Great, non-violent, non-stop entertainment.  Make sure you've got a decent  system - at least a P2-300 and a good 3D card as it does start to slow down  once the park fills up.