At this moment, Blizzard gamers around the world are meeting up through Battle.net to prove their skill in epic multiplayer matches, take part in epic adventures, and socialize with their friends.
Once you log in through the new Battle.net desktop app, you have access to all your Blizzard games. Get in a quick World of Warcraft dungeon run with your guild, play a few league games in StarCraft II, and then head over to Diablo III and level up your barbarian without having to sign in separately each time.