Check Out Our Current Sales & Offers

Your cart

Your cart is empty

Find more items here!

All LEGO® Minifigures
All LEGO® Sets
All LEGO® Parts
Earn Points Today

Join Our Rewards Program

Sign-up and complete your account to get $5 in rewards points to use on your first purchase!

By completing this form, you are signing up to receive our emails and can unsubscribe at any time

Hidden Side Sets

Hidden Side™ invites kids to join a fearless team of ghost hunters, who dare see the unseen and help turn a haunted world back to normal, one ghost at a time. This new theme includes a series of “haunted” building sets full of awesome functionality and secret surprises that, on their own, provide the build and roleplay fun of any LEGO® theme. Activating the free augmented reality app brings the models to life, revealing a hidden world of interactive mysteries and challenges to solve. When combined, the two worlds make each other even more compelling and fun. The app also consists of a digital game that kids can play independent of the building set.
Searching...
No products found matching your search.

31 Results

31 Results

Clear all
El Fuego's Stunt Cannon polybag, 30464 - Lego® Hidden Side Set Building Kit LEGO®

El Fuego's Stunt Cannon polybag, 30464 - LEGO® Hidden Side Set

$9.99

$9.99

In stock

Graveyard Mystery, 70420 - LEGO® Hidden Side Set

Graveyard Mystery, 70420 - LEGO® Hidden Side Set

$14.99 to $39.99

$14.99 to $39.99

In stock

Phantom Fire Truck 3000 - 70436 Building Kit LEGO®
Phantom Fire Truck 3000 - 70436 Building Kit LEGO®

Phantom Fire Truck 3000, 70436 - LEGO® Hidden Side Set

$49.99 to $109.99

$49.99 to $109.99

In stock

Ghost Train Express, 70424 - LEGO® Hidden Side Set Building Kit LEGO®
Ghost Train Express, 70424 - LEGO® Hidden Side Set Building Kit LEGO®

Ghost Train Express, 70424 - LEGO® Hidden Side Set

$49.99 to $119.99

$49.99 to $119.99

In stock

Shrimp Shack Attack, 70422 - LEGO® Hidden Side Building Kit LEGO®
Shrimp Shack Attack, 70422 - LEGO® Hidden Side Building Kit LEGO®

Shrimp Shack Attack, 70422 - LEGO® Hidden Side Set

$29.99 to $59.99

$29.99 to $59.99

In stock

Supernatural Race Car, 70434 - LEGO® Hidden Side Set

Supernatural Race Car, 70434 - LEGO® Hidden Side Set

$29.99 to $54.99

$29.99 to $54.99

In stock

Welcome to the Hidden Side, 70427 Building Kit LEGO®
Welcome to the Hidden Side, 70427 Building Kit LEGO®

Welcome to the Hidden Side, 70427 - LEGO® Hidden Side Set

$9.99 to $44.99

$9.99 to $44.99

In stock

J.B.'S Submarine, 70433 - LEGO® Hidden Side Set

J.B.'S Submarine, 70433 - LEGO® Hidden Side Set

$19.99 to $49.99

$19.99 to $49.99

In stock

Mystery Castle, 70437 - LEGO® Hidden Side Set Building Kit LEGO®
Mystery Castle, 70437 - LEGO® Hidden Side Set Building Kit LEGO®

Mystery Castle, 70437 - LEGO® Hidden Side Set

$119.99 to $299.99

$119.99 to $299.99

In stock

Newbury Haunted High School, 70425 - LEGO® Hidden Side Set Building Kit LEGO®
Newbury Haunted High School, 70425 - LEGO® Hidden Side Set Building Kit LEGO®

Newbury Haunted High School, 70425 - LEGO® Hidden Side Set

$69.99 to $219.99

$69.99 to $219.99

In stock

Wrecked Shrimp Boat, 70419 LEGO® Hidden Side Building Kit LEGO®
Wrecked Shrimp Boat, 70419 LEGO® Hidden Side Building Kit LEGO®

Wrecked Shrimp Boat, 70419 - LEGO® Hidden Side Set

$14.99 to $49.99

$14.99 to $49.99

In stock

Paranormal Intercept Bus 3000, 70423 - LEGO® Hidden Side Set Building Kit LEGO® New Sealed
Paranormal Intercept Bus 3000, 70423 - LEGO® Hidden Side Set Building Kit LEGO®

Paranormal Intercept Bus 3000, 70423 - LEGO® Hidden Side Set

$19.99 to $79.99

$19.99 to $79.99

In stock

El Fuego's Stunt Truck, 70421 - LEGO® Hidden Side Set Building Kit LEGO®
El Fuego's Stunt Truck, 70421 - LEGO® Hidden Side Set Building Kit LEGO®

El Fuego's Stunt Truck, 70421 - LEGO® Hidden Side Set

$29.99 to $39.99

$29.99 to $39.99

In stock

Drag Racer, 40408 Building Kit LEGO®
Drag Racer, 40408 Building Kit LEGO®

Drag Racer, 40408 - LEGO® Hidden Side Set

$5.99 to $24.99

$5.99 to $24.99

In stock

Newbury Juice Bar, 40336 Building Kit LEGO®
Newbury Juice Bar, 40336 Building Kit LEGO®

Newbury Juice Bar, 40336 - LEGO® Hidden Side Set

$5.99 to $34.99

$5.99 to $34.99

In stock

Haunted Fairground, 70432 LEGO® Hidden Side Set Building Kit LEGO®

Haunted Fairground, 70432 - LEGO® Hidden Side Set

$24.99 to $89.99

$24.99 to $89.99

In stock

El Fuego's Stunt Plane, 70429 - LEGO® Hidden Side Set Building Kit LEGO®
El Fuego's Stunt Plane, 70429 - LEGO® Hidden Side Set Building Kit LEGO®

El Fuego's Stunt Plane, 70429 - LEGO® Hidden Side Set

$14.99 to $59.99

$14.99 to $59.99

In stock

Newbury Subway, 70430 Building Kit LEGO®
Newbury Subway, 70430 Building Kit LEGO®

Newbury Subway, 70430 - LEGO® Hidden Side Set

$14.99 to $34.99

$14.99 to $34.99

In stock

The Lighthouse of Darkness, 70431 - LEGO® Hidden Side Set Building Kit LEGO®
The Lighthouse of Darkness, 70431 - LEGO® Hidden Side Set Building Kit LEGO®

The Lighthouse of Darkness, 70431 - LEGO® Hidden Side Set

$29.99 to $79.99

$29.99 to $79.99

In stock

Jack's Beach Buggy, 70428 Building Kit LEGO®
Jack's Beach Buggy, 70428 Building Kit LEGO®

Jack's Beach Buggy, 70428 - LEGO® Hidden Side Set

$7.99 to $29.99

$7.99 to $29.99

In stock

J.B.'s Ghost Lab, 70418 Building Kit LEGO®
J.B.'s Ghost Lab, 70418 Building Kit LEGO®

J.B.'s Ghost Lab, 70418 - LEGO® Hidden Side Set

$9.99 to $29.99

$9.99 to $29.99

In stock

El Fuego foil pack - 792004 Building Kit LEGO®

El Fuego foil pack, 792004 - LEGO® Hidden Side Set

$6.99

$6.99

In stock

Parker foil pack - 791903 Building Kit LEGO®
Sold out

Parker foil pack, 791903 - LEGO® Hidden Side Set

$3.99

Out of stock

Jack + Spencer foil pack - 792009 Building Kit LEGO®
Sold out

Jack + Spencer foil pack, 792009 - LEGO® Hidden Side Set

$5.99

Out of stock

Possessed Pizza Delivery Man foil pack - 791902 Building Kit LEGO®
Sold out

Possessed Pizza Delivery Man foil pack - 791902

$4.99

Out of stock

J.B. foil pack - 792006 Building Kit LEGO®
Sold out

J.B. foil pack, 792006 - LEGO® Hidden Side Set

$5.99

Out of stock

Haunted Worker foil pack - 792007 Building Kit LEGO®
Sold out

Haunted Worker foil pack, 792007 - LEGO® Hidden Side Set

$4.99

Out of stock

Jack foil pack - 791901 Building Kit LEGO®
Sold out

Jack foil pack, 791901 - LEGO® Hidden Side Set

$3.99

Out of stock

Possessed Mechanic foil pack - 792008 Building Kit LEGO®
Sold out

Possessed Mechanic foil pack, 792008 - LEGO® Hidden Side Set

$9.99

Out of stock

Possessed Biker foil pack - 792005 Building Kit LEGO®
Sold out

Possessed Biker foil pack - 792005

$4.99 to $9.99

Out of stock

Newbury Abandoned Prison, 70435 Building Kit LEGO®
Newbury Abandoned Prison, 70435 Building Kit LEGO®
Sold out

Newbury Abandoned Prison, 70435 - LEGO® Hidden Side Set

$24.99 to $79.99

Out of stock