Even with Blizzard's Diablo 4 looming on the horizon, the third entry in this classic action-RPG series is still one of the best online games out there. The premise is the stuff of fantasy gaming legend, hack-and-slash top down adventuring, sending the forces of evil packing with a variety of playable classes. Where Diablo 3 becomes essential is in its rich RPG detail, and the almost compulsive desire it'll drag out of you and your friends to continue leveling and collecting new loot. Diablo 3 may be over a decade old, but there's still magic to be found in its formula.