Marvel Super Hero Squad Online has hit over 4 million registered players. The game’s official website and portal HeroUp.com will be relaunched and the game’s U.S. servers will be expanded to include European players.

“Breaking 4 million registered users is a tremendous achievement for Marvel Super Hero Squad Online and for Gazillion Entertainment,” said Gazillion president David Brevik. “We love the passion that our players have shown for the game, and we are excited to continue to put out new and exciting content for them to enjoy.”