Diablo 3 developer Blizzard admits that its endgame is weak, but it won't expand like World of Warcraft. Full quotes here. Diablo 3 developer Blizzard has admitted that the game's content beyond the ending is weak, and isn't engaging gamers in the way that it should. However, the studio also warns that while Diablo 3 will surely expand, it won't be in small steps like its MMO World of Warcraft ...