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

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 4318 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

8114: Chameleon Hunter

December 12, 2025January 6, 2026 Master Builder

2162 – Back A

July 18, 2022July 18, 2022 Master Builder

6901 – Back E

June 6, 2023June 23, 2025 Master Builder

Book 200 – Page 30-31

October 10, 2024February 4, 2025 Master Builder

4555 – Back D

January 2, 2024January 2, 2024 Master Builder

6673 – Back C

April 20, 2025April 21, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Exploriens Exploriens Sets Official Sets Space Very Small Builds

1858: Droid Scout

July 8, 2022July 8, 2022 Master Builder

Year Released: 1996BricklinkInstructions

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

1747: Treasure Cave

May 6, 2022May 6, 2022 Master Builder

Medium Builds Official Sets Space Unitron Unitron Sets

1789: Star Hawk II

July 18, 2020July 18, 2020 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6824: Space Dart I

September 30, 2019October 6, 2019 Master Builder

ABCs Blacktron II Blacktron II Sets Official Sets Very Small Builds

6851: Tri-Wheeled Tyrax

October 24, 2019July 31, 2023 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder

ABCs Box Plus Classic Town Medium Builds Official Sets Playscape/Play Stage Box Race Town Town Sets

1821: Rally Racers

February 10, 2025March 22, 2025 Master Builder

Classic Town Medium Builds Official Sets Police Town Town Sets

6354: Pursuit Squad

February 9, 2022February 9, 2022 Master Builder

Classic Town Hospital Large Builds Official Sets Town Town Sets

6380: Emergency Treatment Center (St. Mary’s Hospital)

July 15, 2022July 15, 2022 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6524: Blizzard Blazer

June 28, 2022June 28, 2022 Master Builder

Jurassic Park III Medium Builds Official Sets Studio Alternate Builds Studio Sets Studios

1371: Spinosaurus Attack Studio

January 6, 2022June 4, 2024 Master Builder

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

7186: Watto’s Junkyard

April 21, 2026April 21, 2026 Master Builder

ABCs Jørn Thomsen Medium Builds Official Sets Space Space Police II Space Police II Sets

6897: Rebel Hunter

January 23, 2022February 11, 2025 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6590: Vacation Camper

July 8, 2022July 8, 2022 Master Builder

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

7300 (1414, 7308, Kabaya: Life On Mars 1): Double Hover

February 24, 2025February 25, 2025 Master Builder

Large Builds Official Sets Star Wars Star Wars Sets

7161: Gungan Sub

April 21, 2026April 21, 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
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.