The game consists of 7 character classes and each one of them is having different powers: Barbarian, Crusader, Demon Hunter, Monk, Necromancer, Witch Doctor, or Wizard.The game set a new record for "fastest-selling PC game" by selling over 3.5 million copies in the first 24 hours of its release, and became the best-selling PC game of 2012 by selling over 12 million copies. As of August 2015, the number of sales had grown to over 30 million. A sequel, Diablo IV, was announced in 2019 and is currently in development. GAMEPLAY Much like in Diablo and Diablo II, the quality and attributes of equipment are randomized. In addition to base stats (such as damage and attack speed for weapon or armor points on armor) higher-quality items have additional properties such as extra damage, attribute bonuses, bonuses to critical hit chance, or sockets, which allow items to be upgraded and customized by adding gems for various stat bonuses Magic-quality items have up to three random properties, rare-quality items have up to six, and legendary-quality items typically have up to eight with varying degrees of randomness.Set items are a subtype of legendary items which provide additional, cumulative bonuses if multiple items from the same set are simultaneously equipped. Higher level monsters tend to drop higher level items, which tend to have higher base stats and bonuses..