So, I'm not going to post a pic of mine because it's so utterly wrong. For instance, out of the box it calls the following "playable".
Tomb Raider 2013
Rise of the Tomb Raider
Shadow of the Tomb Raider
Tomb Raider Anniversary
Tomb Raider Legend
These are all already verified as working with SteamOS, infact, the latest Tomb Raider series is native to linux. They work out of the box.
The following, inexplicably, are listed as "unknown".
BallisticNG
Counterstrike: Source
Half Life 2
Half Life 2 Episode 1
Half Life 2 Episode 2
Black Mesa
Portal
Half Life Lost Coast
Half Life 2 Update
Sega Mega Drive Classics
This isn't even an exhaustive list, but all of these, also, are native to SteamOS and linux in general already. They are listed IN STEAM as ready for SteamOS and have been for years. In fact, I've run each of them on other hardware and they run just fine out of the box.
For anyone who's keeping track, the number one linux title selling today is... Dead Cells. That's the power that steam has. Valve included that game in their press releases to show indie developers and gamers they love. And it's not even on sale.