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 A

August 25, 2023March 14, 2025 Master Builder 2901 Views

From: 6901: Mobile Lab
Name: Space Lab Tower ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted August 26, 2023 by: Mr.AstonishedRaccoon

← 6035 – Back D
6901 – Back B →

You May Also Like

6511 – Back C

May 10, 2022May 10, 2022 Master Builder

6430 – Back D

December 22, 2023January 1, 2024 Master Builder

6895 – Back B

February 10, 2022March 17, 2022 Master Builder

6950 – Back A

June 16, 2022June 28, 2022 Master Builder

6833 – Back B

April 11, 2020March 14, 2025 Master Builder

6926: Mobile Recovery Vehicle

October 12, 2021October 12, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Box Plus Harry Potter Harry Potter Sets Official Sets Playscape/Play Stage Box Small Builds Sorcerer's Stone

4723: Diagon Alley Shops

July 10, 2024October 8, 2024 Master Builder

Year Released: 2001BricklinkInstructions NONE 🙁

Classic Town Official Sets Small Builds Town Town Sets Traffic

6590: Vacation Camper

July 8, 2022July 8, 2022 Master Builder

Classic Town Fire Official Sets Small Builds Town Town Sets

6643: Fire Truck

July 2, 2024July 2, 2024 Master Builder

Episode II Extra Large Builds Official Sets Star Wars Star Wars Sets

4482: AT-TE

April 9, 2020April 9, 2020 Master Builder

Castle Castle Sets Crusaders Official Sets Small Builds

6042: Dungeon Hunters

October 1, 2024October 1, 2024 Master Builder

ABCs Futron Sets Futuron Large Builds Official Sets Space

6932: Stardefender 200

September 24, 2019August 15, 2023 Master Builder

Official Sets Small Builds Star Wars Star Wars Sets

7124: Flash Speeder

November 15, 2019November 15, 2019 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

Airport Classic Town Large Builds Official Sets Town Town Sets

1682: Space Shuttle

February 27, 2023July 25, 2024 Master Builder

ABCs Bjarne Tveskov Extra Large Builds Futron Sets Futuron Official Sets Space

6990: Futuron Monorail Transport System

August 30, 2020February 12, 2025 Master Builder

ABCs Blacktron II Blacktron II Sets Official Sets Small Builds

6887: Allied Avenger

October 5, 2019July 31, 2023 Master Builder

Official Sets Town Town Jr Town Sets Traffic Very Small Builds

6422: Telephone Repair

July 28, 2020July 28, 2020 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6807: Space Sledge with Astronaut and Robot

November 21, 2023November 21, 2023 Master Builder

Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets

7110: Landspeeder

June 21, 2022March 1, 2023 Master Builder

Harry Potter Harry Potter Sets Official Sets Small Builds Sorcerer's Stone

4702: The Final Challenge

August 8, 2024August 8, 2024 Master Builder

Extra Large Builds Model Team Model Team Sets Official Sets

5581: Magic Flash

January 2, 2024January 2, 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 © 2025 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.