Marvel Cosmic Invasion's Siege of Castle Doom DLC Adds a Roguelike Mode on 10th November

Marvel Cosmic Invasion is getting its most substantial post-launch addition yet. Dotemu and Tribute Games have dated the Siege of Castle Doom DLC for 10th November 2026, with the pack arriving on both PS5 and PS4, according to Push Square ^¹. The expansion was first teased back in August; this week's trailer finally put a date and a feature list on it.

The headline item is a roguelike mode, a notable genre pivot for a game built as a retro-styled side-scrolling brawler. Instead of a fixed stage order, players take their chosen heroes into Castle Doomstadt, where the room layout and the challenges inside them are shuffled for every run. Push Square describes the structure as working along Hades-style lines: branching pathways lead to different reward types rather than a single linear route.

What sits in those rooms matters as much as the layout. According to Gfinity Esports, some chambers hand out power-ups or equipment, others restore health to your team, and a smaller set present risk-reward encounters that can leave you buffed or weakened depending on how they play out ^². The narrative framing is that Doom is charging a Cosmic Inductor to grant himself unlimited power, which gives the run structure a reason to exist beyond repetition.

Progression comes in two layers. Within a run, perks are the main lever, letting you assemble a build rather than simply stacking flat damage. Between runs, meta-progression unlocks gradually widen the pool of events and items that can appear on later attempts — the standard roguelike hook of making failure pay out a little. Gfinity's report notes that this is the piece designed to keep players returning after the credits roll on the base campaign.

Two new playable characters

The DLC also adds Doctor Doom and the Invisible Woman to the roster. Doom's inclusion is the more interesting of the two given that he is simultaneously the antagonist of the new mode and a selectable hero in it — a contrast the base game's roster didn't have to reconcile. Sue Storm rounds out the Fantastic Four representation in a brawler that leans heavily on team composition.

Pricing hasn't been detailed in either report, and neither outlet has stated whether Siege of Castle Doom is a paid add-on or a free update, so treat that as unconfirmed until Dotemu says otherwise. The same goes for the exact room count and how long a full run takes.

Why the fit works

Beat-'em-ups live and die on encounter design, and the genre's classic weakness is that a hand-built campaign runs dry once you've seen every screen. A randomised castle attacks that directly: enemy waves, reward rooms and modifiers can be recombined, so the same combat system produces different pressures on a second or third pass. The risk is the opposite failure mode — randomness that produces runs which feel unfair rather than varied, which is where the meta-progression layer earns its keep.

For anyone who enjoyed Cosmic Invasion's core combat but wanted a reason to keep playing past the story, 10th November is the date to watch. It's a PS5 and PS4 release, and the trailer's full contents have yet to be broken down in detail by either outlet.

Sources

1. ¹ Marvel Cosmic Invasion's New DLC Adds Roguelike Mode Next Month on PS5 www.pushsquare.com
2. ² Marvel Cosmic Invasion: New Roguelike Mode & Characters Arrive www.gfinityesports.com