- Primary Subject: Marvel Cosmic Invasion DLC
- Key Update: The 'Siege of Castle Doom' DLC is coming this Fall with new modes and characters.
- Status: announced
- Last Verified: 2026-08-17
- Quick Answer: The upcoming 'Siege of Castle Doom' DLC for Marvel Cosmic Invasion will add new modes and characters this Fall.
Doom is about to become the talk of the MCU, and the Marvel Cosmic Invasion developers have a brand-new DLC in store to capitalize on the hype: The Siege of Castle Doom.
If you haven’t played Marvel Cosmic Invasion, it’s an incredibly fun beat ‘em up featuring a neat system that lets a single player control two different characters, letting you pull off combos similar to Marvel vs Capcom or, more aptly for modern times, Marvel Tokon: Fighting Souls.
In any case, prior DLC had been relatively small, mostly extra characters like Cyclops and The Thing. The Siege of Castle Doom is a more ambitious content offering, as developer Tribute Games confirmed it will add a brand-new mode and two extra characters to the game.
We have no details on what mode the DLC will add, but I imagine it’ll be something akin to a survival mode or perhaps a roguelite mode, since those seem to be in vogue. As for characters, I doubt Dr. Doom will be playable given the game's theme or the DLC name itself, so we may get two new Fantastic Four characters, since only Ben Grimm is in the game.
Marvel Cosmic Invasion: The Siege of Castle Doom DLC is expected to be released this upcoming Fall. The game is available on Windows (Steam), Nintendo Switch, Nintendo Switch 2, PlayStation 4, PlayStation 5, and Xbox Series X/S.
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