#1 Diablo III
It's been more than a decade since Diablo II hit shelves, and after all that time, it's still the best action RPG out there. Per usual, it's up to Blizzard to one-up themselves, and Diablo III looks ready to do just that, with a host of new features, gameplay changes, and, of course, another adventure in the dark world of Sanctuary.
Additions like the new crafting and skill rune systems should expand the experience without straying too far from franchise roots, while alterations to the core gameplay should help to streamline things considerably. Rest assured that none of these changes have dumbed the game down in the slightest. Instead, they've helped eliminate the minor nuisances you had to deal with in the prior games. No more manually picking up each last pile of gold. No more tedious inventory management. This is a smarter, faster version of the Diablo we all know and love, and that's definitely something to be excited about.