Valve's Steam Machine platform hasn't really taken off, and it's not just because of the hardware. When few developers are willing to release Linux-native versions of games to run on Steam OS, there just isn't a lot to play. Thankfully, the company may have a way to bring more titles to the platform... sort of. Reddit users have pointed out that Steam's graphical interface files now include a section with not-so-secret references to a Steam Play feature that would auto-load "compatibility tools" to play games "built for other operating systems." In other words, Steam OS might include some kind of emulation.
Via: Reddit, Ars Technica