Hmmm.... I'm not a multiplayer gamer so I don't know much about Gaming Tourmamnets. but I heard Rocket League, League of Legends and Team Fortress and Overwatch all are good ones. never tried them myself but I think I'll do in the future~
If you want single player game I have many suggestions!! The Walking Dead for the great narrative and Metro 2033 as new type of FPS. I liked 999 and you can get it on steam as part of The Nonary Games
Shameless Self-promotion ignore if you don't like > anyway I started selling steam games here on steem if you want any?