I'm looking for a new game to play on my iMac. Free would be nice, but if there is something with a demo that is good too. My 24" 2.4ghz 2gb ram Al iMac should handle most (all?) games. And I don't run Windows. Any genre, I'm just looking for something new to play while I sit around this Thanksgiving. And don't mention Ambrosia, I've played a lot of their games. Any suggestions?