http://cheerfulghost.com/panickedthumb/posts/727
Now that you're all set to play, let's talk about how to get games.
The availability of Linux games is growing daily. In addition to big releases, Indie games are becoming a much bigger deal than ever before, and those are far more likely to show up on Linux. One word of advice though: try not to be disappointed when the game you want isn't available, or if it is available but has more bugs and performance issues than its Windows counterpart. We're on our way to more and higher quality releases in Linux but there's still quite a way to go before it's on-par with Windows,...