Find a copy of the book "Macintosh Revelations". There were a ton of shareware and freeware classics on the disc that came with it.

Another book to look for is Cameron Crotty's "Cool Mac Games Plus". It had two disks full of games included with it.

Don't forget to check out Michael Casteel's Klondike, he still offers a version for the Plus on up as well as an OS X version.

Speaking of Gamba, when did he die? I know he passed on but don't know any specifics.