Fabian Lainé
Paid Update
LEGO Batman: Legacy of the Dark Knight - The Mayhem Collection DLC with The Joker and Harley Quinn
In brief
Mayhem Collection is the first major DLC for LEGO Batman: The Dark Knight's Legacy, expected in September 2026. This villain-focused pack introduces The Joker and Harley Quinn as playable characters with a new Arkham Asylum escape mission, a brand-new Mayhem Mode, and exclusive cosmetic content.
Expected for September 2026, Mayhem Collection is the first major DLC for LEGO Batman: Legacy of the Dark Knight, and clearly beefs up the post-launch offering. Designed as a pack centered on super-villains, this additional content will introduce The Joker and Harley Quinn as playable characters, with their own abilities, gadgets and takedown combos. At the heart of the DLC is also a new story mission entirely dedicated to their escape from Arkham Asylum, playable solo or in co-op, with sections designed to take advantage of their asymmetrical playstyles.
The Mayhem Collection also adds Mayhem Mode, a brand-new mode where you sow chaos in the streets of Gotham: dynamic objectives, waves of enemies, score challenges and random events turn the city into a playground for the criminal duo. As a bonus, the DLC includes the Sinister Pack, a villain-themed cosmetic pack featuring 7 new outfits, an alternate Batmobile and a Batcave decoration set to spice up your headquarters. The Mayhem Collection is included in the Deluxe Edition (the base game is still required) and will be sold separately at a price in the usual range for scenario-driven LEGO packs.
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Frequently asked questions
When does the Mayhem Collection release?
The DLC is expected in September 2026.
Do you need to buy the base game to access the DLC?
Yes, the base game is still required to access the Mayhem Collection, whether it's included in the Deluxe Edition or purchased separately.
Which characters are playable in the DLC?
The DLC introduces The Joker and Harley Quinn with their own abilities, gadgets, and asymmetrical takedown combos.
Can the new mission be played in co-op?
Yes, the Arkham Asylum escape mission can be played solo or in co-op mode, with sections designed to make the most of both characters' asymmetrical playstyles.
Key takeaways
- The Joker and Harley Quinn arrive as playable characters with unique abilities and gadgets
- A brand-new full story mission dedicated to their escape from Arkham Asylum, playable solo or in co-op
- Mayhem Mode delivers dynamic chaos across Gotham with variable objectives, enemy waves, and score challenges
- The Sinister Pack cosmetic bundle adds 7 outfits, an alternate Batmobile, and Batcave decorations
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