Path Of Exile (it's what Diablo 3 should have been in my opinion)
Renegade X (a game I worked on years ago. it's great and I suggest everyone download it for free from renegade-x.com - especially if you played the old command and conquer games)
League Of Legends (favorite game to play with my skype friends)
Ori and The Blind Forest (still trying to beat it. great game)