How to Complete All Batcave Expansions in Lego Batman: Legacy of the Dark Knight

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Your Batcave should be the star of your collection, serving as a home for all your gadgets, outfits, and vehicles in Lego Batman: Legacy of the Dark Knight. It’s more than just a storage space for Batman’s gear; it’s a place to train, relax with friends, discover new challenges, and restart story missions.

The Batcave can be expanded to fit more of your new additions, but expanding costs studs. Here’s everything you need to know about enlarging and decorating your Batcave.

All Batcave Expansions

Before adding new areas, explore the existing sections:

The main center area for vehicles
The upper main space with the Batcomputer, where story missions can be restarted
The upper back area featuring the Challenge Board
Batmite’s Shop
Two large display zones for outfits

Note: Image of the Batcave with expanded sections.

You’ll see four large machines near the cave walls, known as expansion robots. Interact with each one to pay for new expansions using your collected studs:

Training Area – 50,000 studs
Display Area – 75,000 studs
Science Area – 100,000 studs
Clean Slate Area – 100,000 studs

Note: Image of the robots ready for expansion.

Each expansion adds specific functions:

The Training Area is equipped with workout benches and exercise equipment.
The Science Area has testing machines and workbenches.
The Display Area showcases trophies you’ve unlocked and has space for more.
The Clean Slate Area is an open, customizable zone where you can build whatever you want.

You can decorate these spaces to match your style. Approach each one and press UP on the D-pad to select new items for decoration, making your Batcave uniquely yours.

Note: Image of the buildable area.

Once all sections are unlocked, you’ll gain access to every MiniKit Trophy and WayneTech Cache hidden inside. Spending a Gold Skill Brick unlocks the Detective skill, which helps find all hidden collectibles. Keep an eye out in tricky spots—high ceilings, fishing spots under walkways, or behind objects—to find everything.