Ye, so I'm completely done with diablo III (I just finished becoming OP and playing the game without even concentrating on the highest possible difficulty) and I already play league of legends, bored with that aswell. I already have minecraft, I already have skyrim, all the halos, crysis 3 and PoE. The game must be on the computer and I would like it to be multiplayer so I can play it with my smaller brother and a couple of friends. Doesn't have to be team based and I'm open to all suggestions.

Edit: must be free to play