Warner Bros.
Games and developer TT Games have provided the first full look at the Mayhem Collection DLC for LEGO Batman: Legacy of the Dark Knight, timed ahead of the title’s Nintendo Switch 2 launch on September 18, 2026.
The announcement outlines new content that expands the base game with a story mission, a new gameplay mode, and a cosmetics pack.
The centerpiece of the Mayhem Collection is a new story mission that puts players in the roles of The Joker and Harley Quinn as they stage a breakout from Arkham Asylum.
In plain terms, the DLC lets players control the franchise’s signature antagonists to complete an escape-focused narrative mission.
Alongside the story content, the Mayhem Collection introduces a Mayhem Mode intended to offer fast-paced, chaos-driven gameplay separate from the main campaign.
Also included in the drop is the Sinister Pack, a content bundle that adds seven new suits (one for each of the game’s original playable characters), a single Batmobile, and five Batcave customization props.
These additions are cosmetic and vehicle-based extras designed to extend player customization options and provide additional fan service for collectors and completionists.
A trailer accompanying the announcement showcases footage from the new mission, snippets of Mayhem Mode, and examples of the Sinister Pack’s suits and Batcave items.
The trailer serves as the official preview for players and outlets ahead of the September release.
TT Games, the studio behind the long-running LEGO game series, and publisher Warner Bros.
Games have positioned this DLC to coincide with the Nintendo Switch 2 release of LEGO Batman: Legacy of the Dark Knight on September 18, 2026.
Players looking for the Mayhem Collection when the game launches should check official Warner Bros.
Games channels and the Nintendo eShop for availability and purchase details.
The Mayhem Collection represents a targeted set of post-launch content that emphasizes character-driven story beats and player customization.
With the base game and DLC arriving together on Nintendo’s next-gen hardware, collectors and LEGO franchise fans now have a clear release window to plan for.
Games and developer TT Games have provided the first full look at the Mayhem Collection DLC for LEGO Batman: Legacy of the Dark Knight, timed ahead of the title’s Nintendo Switch 2 launch on September 18, 2026.
The announcement outlines new content that expands the base game with a story mission, a new gameplay mode, and a cosmetics pack.
The centerpiece of the Mayhem Collection is a new story mission that puts players in the roles of The Joker and Harley Quinn as they stage a breakout from Arkham Asylum.
In plain terms, the DLC lets players control the franchise’s signature antagonists to complete an escape-focused narrative mission.
Alongside the story content, the Mayhem Collection introduces a Mayhem Mode intended to offer fast-paced, chaos-driven gameplay separate from the main campaign.
Also included in the drop is the Sinister Pack, a content bundle that adds seven new suits (one for each of the game’s original playable characters), a single Batmobile, and five Batcave customization props.
These additions are cosmetic and vehicle-based extras designed to extend player customization options and provide additional fan service for collectors and completionists.
A trailer accompanying the announcement showcases footage from the new mission, snippets of Mayhem Mode, and examples of the Sinister Pack’s suits and Batcave items.
The trailer serves as the official preview for players and outlets ahead of the September release.
TT Games, the studio behind the long-running LEGO game series, and publisher Warner Bros.
Games have positioned this DLC to coincide with the Nintendo Switch 2 release of LEGO Batman: Legacy of the Dark Knight on September 18, 2026.
Players looking for the Mayhem Collection when the game launches should check official Warner Bros.
Games channels and the Nintendo eShop for availability and purchase details.
The Mayhem Collection represents a targeted set of post-launch content that emphasizes character-driven story beats and player customization.
With the base game and DLC arriving together on Nintendo’s next-gen hardware, collectors and LEGO franchise fans now have a clear release window to plan for.
