Will Linux be computer games' dark horse OS?

Although Linux-based PC games have enjoyed only modest sales, one console giant is betting heavily on the open source OS. Although Linux is not ready to be a consumer-level OS, it remains a threat to Microsoft because of its flexibility. The support that companies like IBM, HP, and Red Hat throw at it doesn't hurt either. All three now use Linux in vertical markets and for back-end systems such as databases and Web servers. For example, IBM recently released Websphere for Linux, which facilitates Web and e-commerce services.