Dotemu and Tribute Games have released Marvel Cosmic Invasion: The Siege of Castle Doom, a new DLC expansion for their co-op beat ’em up. Available today, November 10, the $7.99 expansion introduces a run-based game mode, two playable characters and additional upgrades. It is available on PC via Steam, PS4, PS5, Xbox Series X|S, Nintendo Switch and Switch 2.
The Marvel Cosmic Invasion Castle Doom DLC centres on a new mode that takes players into Doctor Doom’s stronghold. The objective is to stop Victor von Doom’s Cosmic Inductor, an invention intended to counter Annihilus. Unlike the main campaign, this mode features branching paths, new enemies and time-sensitive objectives that change how each run plays out.
Players can choose from 12 perks that provide defensive, offensive or tactical benefits. However, failing certain objectives can trigger debuffs that weaken their characters. The mode also includes permanent equipment unlocks and events through Reed’s Lab, along with modifiers that affect future attempts.
The expansion adds Invisible Woman and Doctor Doom as playable characters. Susan Storm uses her light-bending abilities and force fields in combat, while Doctor Doom fights using advanced armour and occult powers. Both characters bring new abilities to the existing roster.
There are also new colour palette options for every playable superhero, unlocked by defeating Doctor Doom with the respective character. Composer Tee Lopes has returned to create additional music tracks that respond to gameplay.
The DLC costs $7.99, with a limited-time 10% launch discount available until November 17 on eligible storefronts. Dotemu has also introduced the Marvel Cosmic Invasion: Year of Doom bundle for $37.99, which includes the base game and both DLC expansions released this year.
According to the publisher, Marvel Cosmic Invasion has attracted more than 2 million players since its release. The base game features 19 playable superheroes and a Cosmic Swap system that allows players to switch between two characters during combat, combining their abilities against Annihilus and his allies.
