LEGO DC 76300 Batman: Arkham Asylum Rumoured For September 2025

Even with just four sets releasing so far this year, 2025 has been a strong year for the LEGO DC theme, and the latest rumour suggests that things are only getting bigger and better for the Super Heroes license. Whilst we eagerly await the release of 76304 Batman Forever Batmobile next month, the LEGO DC theme will launch one final set in 2025 with the theme's one and only 18+ model: 76300 Batman: Arkham Asylum.

The Direct to Consumer (D2C) set releases on the 9th of September 2025, retailing for $299.99 / €299.99 / £259.99 with a total of 2,953 pieces included. The build, reportedly comic book-based, is set to be one of the most detailed and atmospheric DC sets ever made. The 18+ model also follows on from previous large superhero-themed buildings such as those in the LEGO Marvel theme of the huge 76269 Avengers Tower and last year's extremely popular 76294 X-Men: The X-Mansion.

Reports suggest that this giant brick-built Arkham Asylum is designed as an inverted corner modular building. The building will likely wrap around a central courtyard or yard of the fictional psychiatric hospital, creating a unique U-shaped layout that feels more closed-in and secure, like a real high-security facility. The model is also rumoured to be built on a baseplate with technic pin hole connections also included to display alongside previous LEGO modular buildings.

For the exterior, Arkham Asylum will probably feature gothic architecture with tall spires, pointed arch windows, cracked stone walls and wrought iron fencing. The front gate, one of many central points of the 18+ set, will likely include a barred archway with the "Arkham Asylum" sign built into it as either a sticker or a print. Further decorative touches like gargoyle statues, overgrown vines and crumbling brick details will also feature to demonstrate the building's old age and the eeriness of Gotham City.

Inside, the Asylum will be packed with play features, Easter eggs and detailed builds. On the ground floor, there will likely be a check-in area for visitors, a waiting room with seating and security monitors, and intake rooms for guards to welcome new inmates. Upper levels, meanwhile, will likely be dedicated to prison cells, some generic and others personalised and decorated to match specific villains.

The unique, dedicated prison cells, for example, may include Mr Freeze having a cold storage room, Killer Croc overlooking a sewer gate, and the Joker having his cell covered with scribbled jokes and laughing faces on the walls. Breakable walls and hidden passages will also likely be included as play features to create an ultimate breakout of Arkham Asylum.

Whilst most of the details of the build mentioned above are just speculative, it has been confirmed that 76300 Batman: Arkham Asylum will include an incredible 16 Minifigures. Batman is obviously included alongside Robin, who's reportedly based on his appearance in the Arkham video game. Also included are Batwoman, Batwing, The Joker, Harley Quinn, Catwoman, Mr Freeze, The Penguin, Poison Ivy, The Riddler, Scarecrow, Bane, Killer Croc, and two Security Guards.

Six of the villains (including Joker, Harley Quinn, Penguin, Bane, Killer Croc and Scarecrow) will unfortunately include the same outfits as they are included in orange prison jumpsuits complete with leg printing. The rest, however, will likely feature unique facial expressions, torso and leg prints, and a range of DC-inspired accessories to make the perfect display and play model for the theme.

76300 Batman: Arkham Asylum

Set Name - Batman: Arkham Asylum

Set Number - 76300

Age Range - 18+

Piece Count - 2,953

Price - $299.99 / €299.99 / £259.99

Release Date - 9th September 2025

76300 Batman: Arkham Asylum releases on the 9th of September 2025, but what do you think? Will you be purchasing 76300 in a couple of months time? What do you hope is included in the most detailed version of Arkham Asylum yet? Which of the 16 Minifigures included in the 18+ model are you looking forward to getting the most? Let us know your thoughts and opinions in the comments below.