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 D

August 28, 2023March 14, 2025 Master Builder 2771 Views

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

Contributions

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

← 6901 – Back C
854 – Front →

You May Also Like

6699 – Back E

October 28, 2025October 28, 2025 Master Builder

6042 – Back C

October 1, 2024October 1, 2024 Master Builder

6289 – Inside A

July 13, 2021July 13, 2021 Master Builder

6525 – Back C

May 4, 2020May 4, 2020 Master Builder

6557 – Back B

December 29, 2021December 29, 2021 Master Builder

6808 – Back A

January 21, 2021May 18, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Large Builds Official Sets Space Super Model

1593: Super Model

February 3, 2021March 18, 2024 Master Builder

Year Released: 1983BricklinkInstructions

Extra Large Builds Official Sets Technic Technic Sets

8860: Car Chassis (Auto Chassis)

January 2, 2024January 2, 2024 Master Builder

Airport Classic Town Official Sets Town Town Sets Very Small Builds

1630: Helicopter

April 8, 2025April 8, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6808: Galaxy Trekkor

January 21, 2021January 21, 2021 Master Builder

Classic Town Large Builds Official Sets Recreation Town Town Sets

6552: Rocky River Retreat

July 15, 2022July 15, 2022 Master Builder

Box Story Medium Builds Official Sets Time Cruisers Time Cruisers Sets

6497: Twisted Time Train

March 17, 2025March 17, 2025 Master Builder

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

ABCs Official Sets Race Town Town Sets Very Small Builds

6677: Motocross Racing

June 8, 2023July 31, 2023 Master Builder

Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space

6834: Celestial Sled

February 9, 2021February 9, 2021 Master Builder

Castle Castle Sets Fright Knights Medium Builds Official Sets

6047: Traitor Transport

November 18, 2021November 18, 2021 Master Builder

Medium Builds Official Sets Western Western Sets

6764: Sheriff’s Lock-Up

September 1, 2024September 1, 2024 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

6205: V-wing Fighter

March 3, 2023March 3, 2023 Master Builder

Classic Town Official Sets Police Town Town Sets Very Small Builds

6506: Precinct Cruiser

July 12, 2021July 12, 2021 Master Builder

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

4706: Forbidden Corridor

February 27, 2023February 27, 2023 Master Builder

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

7128: Speeder Bikes

July 14, 2021July 14, 2021 Master Builder

Divers Extra Large Builds Official Sets Town Town Sets

6560: Diving Expedition Explorer

April 3, 2022April 3, 2022 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.