If it's across all Blizzard games that makes far more sense, but the context of the talk is WoW: "...Blizzard Entertainment's J. Allen Brack and Frank Pearce to

If it's across all Blizzard games that makes far more sense, but the context of the talk is WoW: "...Blizzard Entertainment's J. Allen Brack and Frank Pearce took the stage to offer a detailed look into the inner workings of the genre-dominating World of Warcraft."