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One factor in creating a good gaming experience is throughput.  This post discusses some of what we’ve learned about the performance of our games running on Linux.
As any software developer can tell you, performance is a complicated issue. 

Jordi Sanahuja's profile photoWill Patton's profile photoFriedrich Slivovsky's profile photoChristopher T. Calhoun's profile photo
Heh. I just read that blog post (someone posted a link in a chatroom). All I got to say is, fkyeah! Can't wait for native Steam w/ native games. On release day, you're gonna see a lot of money comin' at you from my account, and I strongly encourage other Linuxians to do the same!
Very excited to see how development enhances linux GPU drivers for all games across the platform! This is precisely the correct approach. Any chance of sharing these findings with the open source nVidia Nouveau and open AMD driver guys? They'll love you for it!
It will if you (and others) support it! I'm not even looking at Steam's store til I'm running their portal natively on my OS. T's gonna help me save monies to show my appreciation for native games :)
+Rainer Rhode Pretty sure steam operates cross-platform. As in, buy for PC and you can play (some games) on mac. The same is true for Portal 2 on the PS3 (but only if you bought the PS3 version).
+Rainer Rhode +Jarosław Guza

Basically, you get access to a game on every OS the game's developer released a version of the game for on steam. They could choose to not release the Linux port on Steam, however, I don't see that as a very likely thing to happen in most cases. If you want to know for certain that you will be able to play a game on Linux through Steam, wait for it to be released by the developer on Steam. You will not have to purchase it twice to play on Windows AND Linux if both versions are released on Steam.
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