Ever played league? I've played that game for over 4 years now, pretty much the most dedicated I've been to a game.
I have never heard of it! Is it a computer game, board game...??
It's a computer game made by Riot Games.
How do you play?
Well you basically choose a champion, which is a character with a set of abilities to use. It is 5 champions vs. 5 champions and you win by destroying their nexus.