Marvel Cosmic Invasion: The Siege of Castle Doom

Key release facts

Release date

November 10th, 2026

Type

DLC

Platforms

Xbox Series X|S, PS4, Linux, PC, PS5, Xbox One, and Nintendo Switch

Developer

Tribute Games

Publisher

DotEmu

Official description

Original English source text provided by IGDB.

Marvel Cosmic Invasion - The Siege of Castle Doom includes two new playable characters and a new game mode. The Fantastic Four's most powerful member and their greatest adversary are joining the fight against Annihilus! Invisible Woman and Doctor Doom head to Marvel Cosmic Invasion for an intergalactic adventure that will see them face off against the fearsome Annihilation Wave! The Siege of Castle Doom will put the leader of Latveria at the center of its new game mode, set in the nefarious Castle Doomstadt!

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