LEGO Batman: Legacy of the Dark Knight

Did someone say “NEW DLC”? Yes, that’s right folks, LEGO Batman: Legacy of the Dark Knight has it’s first DLC story. The Mayhem Collection has arrived.

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The Mayhem Collection kicks off with a bang as we drop into Arkham Asylum on what should’ve been a perfectly ordinary day — at least by Arkham standards.

A twisted chemistry sparks instantly between Dr. Harleen Quinzel and The Joke, and before long, Harley’s had her “epiphany.” In true clown‑prince fashion, Joker turns the entire asylum into his stage, kicking off a breakout that’s less of an escape and more of a deranged going‑away party. Sirens blare, guards scatter, and the duo dance through chaos with confetti guns, boxing‑glove punches, and that trademark Joker sing‑along echoing through the corridors.

Once they’re free of their cells, the level becomes a full‑blown celebration of mayhem. Joker and Harley tear through Arkham’s interior, smashing security systems, taunting guards, and leaving a trail of colourful destruction behind them. It’s a playful reimagining of their origin — Harley shedding her doctor persona and stepping fully into the role of Joker’s partner‑in‑crime. By the time they burst out into the night, Arkham is in ruins and Gotham has two super‑villains on the loose.

And that’s just the beginning: their escape sets the stage for the DLC’s larger chaos across the city, but this first level is all about that electric moment where Harley chooses madness, Joker chooses mischief, and Arkham never stands a chance.