Well, just out of curiosity, I checked Versiontracker for Mahjong, and I could only find a couple of versions. I guess I was just remembering the TONS of versions for windows that are out there and just assumed the same went for Mac (I've only been using Macs since December). So Maybe the .Mac discount on Mahjong is a pretty good deal after all (if you're into tile-matching, that is).