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

Briefly summarized

• The Mayhem Collection DLC is free for Deluxe Edition owners and launches on September 18, 2026.
• The game launches on Nintendo Switch 2 on the same day.
• New missions featuring Harley Quinn and The Joker introduce unique gameplay elements.

The Mayhem Collection DLC for LEGO Batman: Legacy of the Dark Knight, due out on September 18, 2026, gives players the chance to control the iconic villains Harley Quinn and The Joker. This expansion introduces a story in which the duo plans an escape from Arkham Asylum, allowing players to explore their unique weapons and abilities. The DLC is free for everyone who owns the Deluxe Edition, boosting the appeal of that version and encouraging existing players to return to the game.

GAME-scanner analysis

The decision to offer the DLC for free to Deluxe Edition owners is a smart strategy that could not only drive sales of that edition, but also increase player engagement. Launching on Nintendo Switch 2 on the same day as the DLC release is a strategic move that allows the developers to reach a wider audience. This could lead to a livelier player base and more interaction within the community.

What does this mean for players?

Players can look forward to new gameplay elements, including Harley Quinn's Fun Gun, packed with confetti and chewing gum, and The Joker's Paintball Pelter. These unique weapons add a playful twist to the action. In addition, players can unlock outfits inspired by earlier Batman media, adding a nostalgic touch to the experience. The new Mayhem Mode, which challenges players with time limits, adds an extra layer of competition and challenge.