The Batcave is more than a loading screen hub in LEGO Batman: Legacy of the Dark Knight. It stores every vehicle, outfit, and gadget you collect, lets you restart story missions from the Batcomputer, and hides a surprising number of collectibles once you start expanding the walls. The default layout gives you plenty to look at, but the real depth comes from spending Studs on the four expansion robots scattered around the cave.
What does the Batcave look like before any expansions?
Even without spending a single Stud on expansions, the base Batcave covers a lot of ground. The main center floor holds your vehicles, while the upper main area houses the Batcomputer, where you can jump back into any story mission you have already completed. Head further back on the upper level and you will find the Challenge Board, which is where you pick up optional objectives. Batmite's Shop is also accessible from the start, along with two large outfit display areas that fill up as you unlock new costumes.
Each Batman Symbol Sign placed around the cave can be recolored to whatever you prefer, so even the base layout has some personality to it.
Batcomputer restarts any mission
How much do Batcave expansions cost?
Four expansion robots are positioned around the cave, each one ready to tear open a new section of rock once you pay up. The costs scale as you go, so prioritize based on what you actually want access to first. Here is the full breakdown:
The Training Area is the cheapest entry point at 50,000 Studs and comes with workout benches and exercise machines. The Display Area (75,000 Studs) opens up trophy space for the MiniKit collectibles you earn during missions. The Science Area (100,000 Studs) adds testing machines and workbenches. The Clean Slate Area (also 100,000 Studs) is entirely empty by design, giving you a blank canvas to build whatever layout you want.
Expansion robots unlock new rooms
How do you customize each Batcave room?
Once a section is unlocked, every expansion comes with dedicated decor spots. Walk up to any of them and press Up on the D-pad to open the build menu and swap in different items. This applies to every expansion area, so none of the new rooms are stuck looking the same way forever.
The Clean Slate Area is the most flexible of the four since it starts completely empty. There are no preset machines or fixtures to work around, which makes it the best space if you want to design something specific rather than just filling in what the game places for you.
Clean Slate Area build options
What collectibles are hiding in the Batcave?
After all four expansions are purchased, the full cave opens up and so does access to every hidden MiniKit Trophy and WayneTech Cache tucked away inside. These are not always sitting in obvious spots. Some are up near the ceiling, and there is at least one fishing spot hidden beneath the walkways that players regularly miss on a first pass.
To make the search easier, spend a Gold Skill Brick to unlock the Collectible Detective skill. It highlights nearby collectibles, which saves a lot of aimless wandering through the expanded cave sections.
MiniKit trophies fill the Display Area
Planning your Batcave expansion order
The order you unlock expansions does matter if you are trying to be efficient with Studs. The Training Area at 50,000 is the obvious first pick since it costs the least. From there, whether you go for the Display Area or save toward the two 100,000-Stud expansions depends on your priorities.
If collecting MiniKit Trophies is your focus, unlock the Display Area second so you have somewhere to show them off as you earn them. If you want the most creative freedom early, the Clean Slate Area gives you a building playground the moment you can afford it, though at 100,000 Studs it takes longer to reach.
For context on how long it realistically takes to build up that kind of currency, the how long to beat guide notes the main campaign runs around 15 hours, with full 100% completion pushing past 50 hours. That gives you a rough sense of the grind involved if you are targeting all four expansions in a single playthrough.
For everything else the game has to offer, the full LEGO Batman: Legacy of the Dark Knight guide collection covers missions, collectibles, and more.