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 Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space

6901 – Back C

August 28, 2023March 14, 2025 Master Builder 3469 Views

From: 6901: Mobile Lab
Name: Convertible Cruiser Mobile Lab ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted August 28, 2023 by: Mr.AstonishedRaccoon

← 854: Go-Kart
6901 – Back D →

You May Also Like

6949 – Back A

July 12, 2022July 13, 2022 Master Builder

6385 – Back C

August 7, 2022August 7, 2022 Master Builder

6984 – Back B

March 18, 2022March 18, 2022 Master Builder

2162 – Back C

July 18, 2022July 18, 2022 Master Builder

4883 – Instructions F

August 2, 2021August 28, 2024 Master Builder

6646 – Back C

March 16, 2022March 16, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Official Sets Space Very Small Builds

6814: Ice Tunnelator

April 6, 2020April 2, 2025 Master Builder

Year Released: 1993Designer: Jørn ThomsenBricklinkInstructions (A version of these instructions has an Ice Galaxy 2002 logo)

Classic Town Large Builds Official Sets Police Town Town Sets

381: Police Headquarters

July 27, 2023July 27, 2023 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

1895: Sky Patrol

June 1, 2022June 1, 2022 Master Builder

Box Story Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Large Builds Official Sets Space

6983: Ice Station Odyssey

November 9, 2019March 20, 2025 Master Builder

Launch Command Medium Builds Official Sets Town Town Sets

6336: Launch Response Unit

July 12, 2021July 12, 2021 Master Builder

Classic Town Food and Drink Medium Builds Official Sets Town Town Sets

1620-2: Factory

October 21, 2021October 21, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder

Large Builds Official Sets Race Town Town Sets

6713: Grip-n-Go Challenge

February 10, 2025February 10, 2025 Master Builder

Jørn Thomsen Official Sets Small Builds Space Space Police II Space Police II Sets

6852: Sonar Security

September 22, 2020July 29, 2023 Master Builder

Extra Large Builds Model Team Model Team Sets Official Sets

5580: Highway Rig

February 9, 2026February 9, 2026 Master Builder

Divers Large Builds Official Sets Town Town Sets

6441: Deep Reef Refuge

November 6, 2019December 29, 2021 Master Builder

Box Plus Mask Medium Builds Official Sets UFO UFO Sets

6999: Cyber Saucer with Promotional Mask

December 16, 2025December 16, 2025 Master Builder

Episode I Medium Builds Official Sets Star Wars Star Wars Sets

7141: Naboo Fighter

December 29, 2021December 29, 2021 Master Builder

Classic Town Official Sets Police Town Town Sets Very Small Builds

6506: Precinct Cruiser

July 12, 2021July 12, 2021 Master Builder

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4720: Knockturn Alley

July 9, 2024July 9, 2024 Master Builder

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

6211: Imperial Star Destroyer

February 6, 2024February 7, 2024 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.