Dota 2.
I had 5 games today. It's time consuming but man I love it. Played Windrunner twice, I love her stun ability. Just watching my entire team destroy a player after I've pinned them down is just great.
Jakiro is another favourite of mine. He's probably my best hero too. Freezing players with the ice wall is satisfying and even though he's a support, he can be pretty tough. I also like to harass players with my flame attacks.