I like how my Linux steam library is growing day after day. It has grown by a few games this past week alone. Of 266 games I own, I can 'only' play 89 in my current OS. Who knows how many more I will be able to play next month.
Haven't you noticed it ?
BioShock Infinite popped up the other day for me, I've seen a few others on /r/linux_gaming as well.
Valve is preparing for the big release of SteamOS, steam link, steam machines and its steam controller this year, so we should be seeing a lot of games on Steam become available for Linux for the next 8 months.