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
- 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 3709 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

6693 – Back B

May 10, 2022May 10, 2022 Master Builder

2153 – Inside A

June 15, 2023June 15, 2023 Master Builder

6529 – Back B

April 11, 2023May 17, 2023 Master Builder

6016 – Back A

October 12, 2021October 12, 2021 Master Builder

710 – Inside D

February 22, 2024February 22, 2024 Master Builder

1632 – Back C

July 25, 2024July 25, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Divers Extra Large Builds Official Sets Town Town Sets

6560: Diving Expedition Explorer

April 3, 2022April 3, 2022 Master Builder

Year Released: 1997BricklinkInstructions

Life on Mars Life on Mars Sets Official Sets Very Small Builds

7302 (1416, Kabaya: Life On Mars 2): Worker Robot

February 25, 2025February 25, 2025 Master Builder

Divers Official Sets Town Town Sets Very Small Builds

6555: Sea Hunter

February 8, 2023February 8, 2023 Master Builder

Classic Town Fire Official Sets Town Town Sets Very Small Builds

6611: Fire Chief’s Car

February 20, 2024February 20, 2024 Master Builder

Airport Classic Town Large Builds Official Sets Town Town Sets

1682: Space Shuttle

February 27, 2023July 25, 2024 Master Builder

Classic Space Classic Space Sets Jens Nygaard Knudsen Medium Builds Official Sets Space

926 (493): Space Command Center

October 22, 2019July 31, 2023 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6736: Beach Lookout

April 7, 2026April 7, 2026 Master Builder

Large Builds Official Sets Star Wars Star Wars Sets

7140: X-wing Fighter

November 10, 2019April 21, 2026 Master Builder

Castle Castle Sets Knights Kingdom II Large Builds Official Sets

8876: Scorpion Prison Cave

January 20, 2026January 20, 2026 Master Builder

Belville Belville Sets Lion Knights Medium Builds Official Sets Recreation

5847: Surfers’ Paradise

April 2, 2025April 2, 2025 Master Builder

ABCs Bjarne Tveskov Blacktron II Blacktron II Sets Official Sets Small Builds

6878: Sub Orbital Guardian

October 4, 2019August 14, 2023 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1750: Renault Formula 1 Racer

July 13, 2021July 13, 2021 Master Builder

Classic Town Harbor Official Sets Small Builds Town Town Sets Wrecker

6663: Wave Rebel

June 6, 2022June 6, 2022 Master Builder

Blacktron II Blacktron II Sets Large Builds Official Sets

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 Master Builder

Classic Town Off-Road Official Sets Small Builds Town Town Sets

6675: Road & Trail 4×4

March 20, 2023March 20, 2023 Master Builder

Box Plus Different Box Versions Medium Builds Official Sets Storage Container Time Cruisers Time Cruisers Sets

1853: Navigator

March 18, 2025March 5, 2026 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
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.