The Indie Royale July Jubilee Bundle has the Geneforge Saga from Spiderweb. This is all 5 Geneforge games.
All 6 games in the bundle run on Windows and only 3 of the games on a Mac and only one on Linux.
Go to: http://www.indieroyale.com
I edited this to clarify the number of games in the bundle run on what OS.