Once upon a time, the Diablo series defined the hack-and-slash action role-playing game, setting the standard by which all games in the genre were measured. Now, Diablo III feels more familiar than genre-defining, relying on refining the same hooks that have always made this series so compelling. But what a refinement it is. The controls are responsive and pleasurable; the diversity of character classes and skill customization options is impressive; and the constant stream of gold and treasure you earn is irresistible. Blizzard has the recipe for crafting a habit-forming loot-driven action RPG down to a science, and in Diablo III, the results of that recipe are more exciting and more addictive than they've ever been.