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 4876 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

6804 – Back A

September 25, 2019October 25, 2021 Master Builder

6655 – Back D

June 4, 2023June 4, 2023 Master Builder

7260 – Back A

March 1, 2023March 3, 2023 Master Builder

4920 – Back C

March 1, 2023March 1, 2023 Master Builder

6405 – Back C

September 15, 2022September 15, 2022 Master Builder

7783 – Instructions A

March 27, 2026March 27, 2026 Master Builder

EXPLORE MORE OFFICIAL SETS

Box Story Fabuland Fabuland Sets Medium Builds Official Sets

132: Cottage

March 1, 2023April 3, 2024 Master Builder

Year Released: 1979Bricklink The box reads, “FABULAND™ is the name of a wonderful world, combining limitless fantasy with easy building. With

Drome Racers Official Sets Racers Small Builds

4593: Zero Hurricane & Red Blizzard

January 27, 2025February 21, 2025 Master Builder

Castle Castle Sets Crusaders Official Sets Small Builds

6042: Dungeon Hunters

October 1, 2024October 1, 2024 Master Builder

Classic Town Fire Large Builds Official Sets Town Town Sets

1656: Evacuation Team

July 22, 2026July 22, 2026 Master Builder

Arctic Medium Builds Official Sets Town Town Sets

6579: Ice Surfer

May 22, 2026May 22, 2026 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6510: Mud Runner

May 8, 2022May 8, 2022 Master Builder

ABCs Insectoids Insectoids Sets Official Sets Space Very Small Builds

6817: Beta Buzzer

June 1, 2022March 22, 2025 Master Builder

Cowboys Official Sets Very Small Builds Western Western Sets

6712: Sheriff’s Showdown

October 10, 2023October 10, 2023 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

Castle Castle Sets Lion Knights Official Sets Very Small Builds

6021: Jousting Knights

September 25, 2024September 25, 2024 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6373: Motorcycle Shop

January 6, 2022January 6, 2022 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6735: Air Chase

April 7, 2026April 7, 2026 Master Builder

Classic Town Extra Large Builds Official Sets Town Town Sets Traffic

1592-2: Town Square – Castle Scene (Dutch Version)

October 22, 2021October 22, 2021 Master Builder

Cowboys Medium Builds Official Sets Western Western Sets

6755: Sheriff’s Lock-Up

July 3, 2024February 18, 2025 Master Builder

Adventurers Adventurers Sets Desert Medium Builds Official Sets

5948: Desert Expedition

October 8, 2024October 8, 2024 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Ice Planet 2002 Ice Planet 2002 Sets Medium Builds Official Sets Space

Ice Planet 2002 Value Pack (VP-1)

March 7, 2026March 7, 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.