Even though there are many top-quality open source games available for Linux, the operating system is still vastly underrated as a gaming platform. Encouragingly, we have seen developers of some of the most popular commercial gaming titles embrace Linux. The welcoming hand that Valve has extended, developing a Linux native version of their Steam client and porting their back catalogue, should accelerate takeup of Linux as a real gaming platform. But it is important that Linux developers do not neglect what has made it a success; high quality open source software.