LEGO Batman Mayhem: Joker & Harley Quinn DLC Reveal

Get ready to throw a party in the darkest corners of Gotham, because the chaos is about to escalate. The long-awaited LEGO Batman: Legacy of the Dark Knight is set to get an explosive, anarchic upgrade with the release of the new Mayhem Collection DLC, which promises pure, unadulterated mayhem for all Deluxe Edition owners.

This isn’t just a simple expansion; it’s an invitation to step into the shoes of two of Gotham’s most notorious villains as they team up for an epic breakout from Arkham Asylum. The centerpiece of the DLC is a brand new story mission where Harley Quinn and the Joker join forces to orchestrate a legendary escape, kicking off a celebration that Gotham City will never forget.

Prepare for some delightfully chaotic gameplay. Harley Quinn steps up with her signature arsenal—her trusty hammer and her Fun Gun loaded with confetti and bubblegum, ready to unleash pandemonium. She’ll also be summoning her beloved hyenas, Bud and Lou, for extra mayhem.

The Joker brings his unique brand of anarchy to the table, armed with his Paintball Pelter and Boxing Glove. Players will engage in a fast-paced, agile combat style focused entirely on speed and mobility as they navigate the city in a frenzy of color and destruction.

But the fun doesn’t stop there. The Mayhem Mode throws players directly into the heart of Gotham City, tasking the duo with time-limited runs to reach Amusement Mile while being relentlessly pursued by Batman and Robin. Along the way, players must smash everything in sight to earn LEGO studs while battling a veritable roster of notorious DC Super-Villains, including A.R.G.U.S. Agents and members of Amanda Waller’s Task Force X, such as Deathstroke, Killer Croc, and Deadshot.

To further enhance this villainous experience, the Sinister Pack adds a wealth of cosmetic rewards. Players can unlock themed outfits inspired by iconic Batman media, including designs from The Dark Knight Returns and Batman: The Animated Series, as well as custom Joker outfits for Harley Quinn and Catwoman. The pack also includes a custom Jokermobile vehicle and deep customization options for the Batcave, complete with items like the Joker Fish Aquarium and the Helmet (The Merciless).

For those who crave the ultimate challenge, the DLC includes an enhanced ‘Absolute’ difficulty level. This free update demands greater skill, awareness, and precision in combat, ensuring that only the most skilled players can truly master the chaos of the Mayhem Collection.

With the Mayhem Collection DLC launching on September 18, 2026, the laughs, the action, and the mayhem are guaranteed to make LEGO Batman: Legacy of the Dark Knight an unforgettable adventure.