Doctor Doom gets his own nightmare mode. Marvel's cosmic invasion expands with: The Siege of Castle Doom. And it's not just another level. An Evolving Assault on Dooms Castle New Enemies, Traps and Encounters Equipment and Operation Options Upgrading Systems Through Reed Richards Multiplayer Performance Rewards The developers say the new mode features more than five times as many encounters as the main game. Plus two new playable characters: Invisible Woman Doctor Doom Each run challenges you to push forward before Doom completes his ultimate weapon. DLC launches on November 10th. Official details of PlayStation developers: ⠀.