Is Facebook Taking on Steam?
Facebook just recently, through a partnership with Unity, announced they are working on an online marketplace for desktop computers. An evolution of their Facebook Arcade service, it will launch with a number of casual (Facebook, iOS/Android) games, but is intended to add less casual games as time goes on, in a move seamingly targeting Steams marketplace.
Although Facebook isn't a huge revenue source for game developers, they are still large enough they shouldn't be ignored. If they get app discoverability right, this could be a good development for gamedevs.
The deadline to apply for beta access to the prgoram is August 31/2016. You can read more about it here:
http://www.gamefromscratch.com/post/2016/08/21/Facebook-and-Unity-Team-Up-On-New-Game-Market.aspx