I always see it as open source on Linux so there might be an OS X build
Marathon /2/Infinity (9) - available for free now.It's pretty awesome, logical puzzle game. Zombinis (9) - I was introduced to this during elementary school.I have copies if you can't find it online and are interested Double (9/X) - nice little Mahjongg game with multiple layouts and will read a folder of.Just plug in a usb controller and go to town Star Wars Episode 1 Racer (9) -yes, that N64 game you remember.I'm not sure how well it will run on a g3, but I have a copy on a g4 machine running Leopard if you'd like it-I can't find any ppc versions of it anymore to download) (DXX-rebirth is a 'modern' opensource remake. Descent/2/3 (7/8/9) is still one of my favourite games of all time.As for places to find them, check out magintoshgarden.Some of my favourites are as follows: