League of Legends
If you haven’t played League of Legends already, you’ve probably been living under a rock at this point. Coming out in late 2009 from Riot Games, LoL (as it’s known to its friends) has become something of a phenomenon, taking the title as the most played PC game in NA and EU last year, peaking at 5 million players playing at the same time, 12 million people playing every day. It’s a MOBA, a game in which you take a champion and try to go through enemy minions and other champions as well as towers in order to destroy one big building. It’s a simple concept, but very fleshed out and very team-based, which is probably why it got so popular.
If you haven’t already, you should probably try it, if only to know what all the fuss is about.