The Commission said for "all categories of game software, the combined firm would continue to face several strong, effective competitors, such as Electronic Arts, and the game console manufacturers, such as Sony, Nintendo and Microsoft." Activision is riding high on the success of games such as "Guitar Hero", "Tony Hawk" and "Call of Duty" but has lacked an offering in the online role-playing area, dominated by "World of Warcraft" from Vivendi's Blizzard Entertainment.