I went into the Marvel Heroes demo fully expecting the game to reflect the design influence of David Brevik, the esteemed co-founder of Blizzard North (of Diablo and Diablo II fame) and now Gazillion's president. In that, I wasn't disappointed. Though the game proudly touts a stable of MMO buzzwords -- grouping, instances, shared worlds -- it's easy to see Marvel Heroes as a sort of spiritual successor to Diablo, and Brevik's influence shines through. It might be massively multiplayer, but it's a loot-based brawler at heart. And it's going to be free-to-play.