The game "Streamline" is free on Steam until 12pm Nov 18 EST, and yes you get to keep it.
Just go to the game's Steam store page (make sure your logged in of course), click "play game" and the game should be added to your library.
I can confirm that this worked for me.
http://playstreamline.com/2016/11/14/streamline-free-on-steam/
http://store.steampowered.com/app/252850/