LEGO Batman: Legacy of the Dark Knight Receives Mayhem Collection DLC Featuring The Joker and Harley Quinn

LEGO® Batman™: Legacy of the Dark Knight, developed by TT Games and published by Warner Bros. Games, introduces the Mayhem Collection DLC on September 18 for PlayStation 5, Xbox Series X|S, PC (via Steam and Epic Games Store), and Nintendo Switch 2.

The new expansion brings playable versions of The Joker and Harley Quinn, complete with distinct combat styles and unique equipment like the Paintball Pelter, boxing glove, and Harley’s hyenas, Bud & Lou.

In the new story mission, you control The Joker and Harley Quinn as they stage a breakout from Arkham Asylum. The DLC also introduces Mayhem Mode, where you cause timed chaos across Gotham City by destroying landmarks and vehicles to earn LEGO studs while evading Batman, Robin, and members of Amanda Waller’s Task Force X.

The accompanying Sinister Pack adds comic-inspired outfits for characters like Batman, Robin, and Nightwing, along with the Jokermobile and Batcave customization items. Arriving alongside the DLC on September 18, a free update adds the higher-tier Absolute difficulty setting for all players.