Skip to content

Back of the Box Builds

LEGO Alternate Builds!

SETS
- Adventurers
- Aquazone
- Belville
- Building Set with People
- Castle
- Duplo
- Fabuland
- Harry Potter
- Holiday and Event
- LEGOLAND
- Model Team
- Pirates
- Space
- Star Wars
- Technic
- Town
- Universal Building Set
- Western
- More Sets
- Misc
USEFUL LINKS
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added

6085 – Inside B

July 13, 2021October 28, 2021 Master Builder 4649 Views

From: 6085: Black Monarch’s Castle
Name: Black Knight’s Siege Beast ¹
Instructions: View PDF

Contributions

Name and PDF submitted on September 24, 2021 by: Cor3y

← 6085 – Inside A
6090: Royal Knight’s Castle →

You May Also Like

6483 – Back D

December 29, 2021December 29, 2021 Master Builder

6452 – Back A

October 3, 2024October 3, 2024 Master Builder

6211: Imperial Star Destroyer

February 6, 2024February 7, 2024 Master Builder

6930 – Inside A

November 18, 2020September 11, 2023 Master Builder

4582 – Instructions A

October 23, 2021February 21, 2025 Master Builder

6082: Fire Breathing Fortress

January 13, 2022January 13, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Blacktron II Blacktron II Sets Official Sets Very Small Builds

6832: Super Nova II

October 5, 2019October 5, 2019 Master Builder

Year Released: 1991Bricklink

Bjarne Tveskov Futron Sets Futuron Medium Builds Official Sets

6925: Interplanetary Rover

September 25, 2019July 29, 2023 Master Builder

Box Plus Cowboys Official Sets Playscape/Play Stage Box Small Builds Western Western Sets

6799: Showdown Canyon

August 1, 2023October 8, 2024 Master Builder

Aquashark Aquazone Aquazone Sets Large Builds Official Sets

6190: Shark’s Crystal Cave

July 13, 2021January 20, 2022 Master Builder

Duplo Duplo Sets Official Sets Playhouse Small Builds

2551: Grandma’s Kitchen

February 27, 2023February 27, 2023 Master Builder

ABCs Jørn Thomsen M:Tron M:Tron Sets Official Sets Small Builds Space

6896: Celestial Forager

January 26, 2022July 31, 2023 Master Builder

Box Marketing Blurb Large Builds Official Sets Space Space Police I Space Police I Sets

6955: Space Lock-Up Isolation Base

February 3, 2021April 3, 2024 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4561: Railway Express with Transformer and Speed Regulator

January 5, 2026January 5, 2026 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

6630: Bucket Loader

October 13, 2021October 13, 2021 Master Builder

Official Sets Small Builds Space UFO UFO Sets

6818: Cyborg Scout

July 18, 2022July 18, 2022 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

1490: Town Bank

January 23, 2024January 23, 2024 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6536: Aero Hawk

January 22, 2026January 22, 2026 Master Builder

Basic Set Duplo Duplo Sets Official Sets Very Small Builds

1657: Bird

December 28, 2021December 29, 2021 Master Builder

Medium Builds Official Sets Town Town Sets

6561: Hot Rod Club

November 10, 2019November 10, 2019 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6510: Mud Runner

May 8, 2022May 8, 2022 Master Builder

ABCs Aquanauts Aquazone Aquazone Sets Extra Large Builds Jørn Thomsen Official Sets

6195: Neptune Discovery Lab (Aqua Dome 7)

January 20, 2022February 11, 2025 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

There were once pictures of additional LEGO® builds on the back of set boxes. Written on the boxes was typically something about the endless building possibilities, "Build any of these exciting models with this set!" There were no instructions for these alternate builds, until now.

Sets

Adventurers
Aquazone
Belville
Building Set with People
Castle
Duplo
Fabuland
Harry Potter
Holiday and Event
LEGOLAND
Model Team
Pirates
Space
Star Wars
Technic
Town
Universal Building Set
Western
More Sets
Misc

Useful Links

Submit Instructions!
New Instructions
New Official Sets
New Alternate Builds
Minifigs
Very Small Builds (<35 pcs)
Small Builds (<100 pcs)
Medium Builds (<200 pcs)
Large Builds (<400 pcs)
Extra Large Builds (>400 pcs)
How BOTBB was Built

In Honor of 1526

The classic space set that never was.

Copyright © 2026 Back of the Box Builds. All rights reserved. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize, or endorse this site.