If you did not like Diablo 3, Path Of Exile is the way to go! No auction house, really CRAZY amount of possible character customization with the passive skill tree, play coop, seven classes and hundreds of skills. I'm playing it since a few weeks and it is a lot of fun. Currently a MAC port is planned but not available yet! The best: It is absolutely free to play! No pay-to-win-********, the microtransaction shop only offers visual changes to your appearance.