|You can grab a copy of Dark Basic classic for real cheap off of eBay. I have used it to make little apps and such, but oddly enough never used it to create a game. It uses a form of BASIC and is easy to program. Dark Basic Pro uses more of a structured C style language and is not worth it because you're getting up there with C style languages and for somebody like me that started out with 68K asm., C/C++ is a friggin nightmare.|
There is also FPS creator which is a GUI style environment, pretty much drag and drop, but you'll still have to create your own models and such.
PowerMac 9600(1 ghz G4)
ATi 9200 PCI