Steam and Source Engine for Linux
I posted earlier that Steam is coming to Linux, but this was just the half of the story. Valve will also port the source engine to Linux which will enable native support for games like Half Life2, Counter Strike source, Team Fortress 2 and more. One of the first games will probably be Left 4 Dead 2 with native Linux support.
This will also raise the pressure on other publishers and developers to start native support for Linux.ImageLeft 4 Dead 2 running natively on Linux.... No Wine library or anything else for "fake" support. This is on an Ubuntu 11.10 installation with the AMD Catalyst Linux driver.