Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
phoronix.com: While more and more closed-source games -- ranging from indie titles to AAA games -- are heading to Steam ahead of SteamOS and Steam Machines, there still isn't too many open-source games on Valve's digital distribution platform. Here's some information why one of the more popular cross-platform open-source first person shooters isn't yet to be found on Steam.
dedoimedo.com: Just a few days after it was released, I purchased the game, Deluxe Edition, at USD64.99. Even though this is a hefty price, I wanted to support both Bohemia Interactive as well as Steam for their gallant Linux efforts. There are all sorts of glitches and such, but that's not important. What we want is awesome, realistic war. And when it comes to that, no one deliver like the Czechs.