Linux Schminux
Games programmed by hobbyists aren't going to attract users to a platform. Particulary when the games feature the mascot of another operating system. The Mac will never be a "serious gamer's" platform for a few simple reasons.
1) Prohibitive cost. Serious gamers don't want all-in-one computers. They want frame-rate crunching powerhouses. To get the same framerates you'd get out of a $700 PC, you'd have to spend $3,500 on a Mac, and then watch your selection of games go from "everything on the market," to "Bugdom and that other game."
2) Precedence. The PC and game consoles are established leaders in the entertainment market. It's like sending car brochures to someone who just bought a car.
So games are a nice little bonus for mac users like myself, but I know that the strength of my computer lies in graphic design and audio production (or anything else where speed and creativity reign supreme). If anyone out there is waiting for the Mac to be the most popular computer on the market, stop it. It won't happen. At least not in our lifetimes.