Zanderat1 wrote on Sep 25, 2013, 21:14: Will they allow non-STEAM games to run on the OS?
I'm quite sure the answer is yes. Valve has stated that it will be OpenSource and that its Linux, and that they are approaching this as an open platform. So you should be able to install anything you can install in Linux right now. Will it be "integrated" into your Steam Library? Probably. Currently you can add any of your Windows installed programs into the steam launcher. I see no reason why SteamOS wouldn't allow for this as well. Only issue I see is you might not have Gamepad support for random program X.