What platform do you use to play games on PC?

What do you guys use to play games on PC?

I personally use Steam & Origin as they contain 90% of the games I would want to play.

Yeah, I've only known of Steam actually so that's the only one I currently use. It's one of the most popular and I don't plan on switching any time soon.

I've been so long using Steam. I usually playin' Dota 2 and DOOM.

Depends. Sometimes I run games by themselves (League of Legends, Smite) and other games require Origin. I've rarely used Steam since there aren't any games that I like on there.

Steam, Origin, Uplay & Battle.net.
I have about 200 games on steam, like 5 on Origin, 10 on Uplay and 1 on Battle.net.