Skip to content

Back of the Box Builds

LEGO Alternate Builds!

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

Extra Large Builds Jørn Thomsen Official Sets Space Unitron Unitron Sets

6991: Monorail Transport Base

September 28, 2019July 29, 2023 Master Builder 8370 Views

Year Released: 1994
Designer: Jørn Thomsen
Bricklink
Instructions

Back A

Back A

← 6871 – Back D
6991 – Back A →

You May Also Like

6515: Stunt Copter

February 2, 2022February 2, 2022 Master Builder

6884 – Back C

September 24, 2019October 25, 2021 Master Builder

6970 – Back E

June 8, 2022June 29, 2022 Master Builder

6834 – Back B

February 9, 2021November 3, 2021 Master Builder

6850: Auxiliary Patroller

September 24, 2019July 29, 2023 Master Builder

6970 – Inside A

January 20, 2021January 20, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Basic Happy Meal McDonalds Official Sets Polybag Universal Building Set Very Small Builds

1912: Car (Set A, 1)

April 1, 2025April 1, 2025 Master Builder

Year Released: 1984BricklinkInstructions

Classic Space Classic Space Sets Official Sets Space Supplemental

454: Two Lunar Landing Plates

July 11, 2024July 11, 2024 Master Builder

ABCs Aquanauts Aquazone Aquazone Sets Medium Builds Official Sets

6175: Crystal Explorer Sub

January 20, 2022March 22, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6844: Seismologic Vehicle (Sismobile)

October 22, 2019September 10, 2023 Master Builder

Box Plus Classic Space Classic Space Sets Jens Nygaard Knudsen LL Link Official Sets Playscape/Play Stage Box Small Builds Space

918: Space Transport

April 27, 2020January 6, 2026 Master Builder

Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Small Builds

6257: Castaway’s Raft

June 6, 2022July 29, 2023 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6971: Inter-Galactic Command Base

September 12, 2019September 28, 2019 Master Builder

Jørn Thomsen Official Sets Small Builds Spyrius Spyrius Sets

6835: Saucer Scout

November 9, 2019July 29, 2023 Master Builder

ABCs Exo-Force Exo-Force Sets Medium Builds Official Sets

7700: Stealth Hunter

March 26, 2026March 26, 2026 Master Builder

Large Builds Model Team Model Team Sets Official Sets

5510: Off Road 4×4

February 10, 2026February 10, 2026 Master Builder

Cargo Classic Town Extra Large Builds Official Sets Town Town Sets

6391: Cargo Center

March 13, 2024March 13, 2024 Master Builder

Medium Builds Official Sets Police Town Town Jr Town Sets

6433: Coast Watch (Coastwatch)

July 10, 2024July 10, 2024 Master Builder

Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets

6210: Jabba’s Sail Barge

February 1, 2024February 1, 2024 Master Builder

Blacktron Blacktron Sets Bonus/Value Packs Castle Castle Sets Classic Town Forestmen Official Sets Small Builds Space Town Traffic

1675: Legoland Triple Pack

October 12, 2021October 12, 2021 Master Builder

Official Sets Racers Radio Control Small Builds

8675: Outdoor Challenger

July 15, 2024July 15, 2024 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6649: Street Sweeper

July 8, 2022July 8, 2022 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
BATMAN
Bionicle
Belville
Building Set with People
Castle
Duplo
Fabuland
Harry Potter
Holiday and Event
LEGOLAND
Model Team
Pirates
Space
Star Wars
Technic
Train
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.