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 Alternate Instructions Included Exploriens Exploriens Alternate Builds Instructions Added Medium Alt Build Medium Builds Space

6899 – Back C

February 5, 2023October 4, 2024 Master Builder 3789 Views

From: 6899: Nebula Outpost
Name: Nebula Mobile Lab ¹
Instructions: Included in 1993 Shop at Home – Holiday Express | View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on February 5, 2023 by: Valdis

← 6899 – Back B
6541 – Back D →

You May Also Like

6135 – Back A

March 21, 2023May 19, 2023 Master Builder

6679 – Back C

December 28, 2021December 28, 2021 Master Builder

6099: Traitor Transport {with Dragon Cave}

April 1, 2025April 1, 2025 Master Builder

6670 – Back B

February 3, 2022February 9, 2022 Master Builder

6074 – Inside B

October 14, 2021August 1, 2023 Master Builder

6828 – Back B

January 23, 2025January 30, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Insectoids Insectoids Sets Official Sets Space Very Small Builds

6903: Bug Blaster

October 4, 2024October 4, 2024 Master Builder

Year Released: 1998BricklinkInstructions

Classic Town Fire Official Sets Town Town Sets Very Small Builds

6611: Fire Chief’s Car

February 20, 2024February 20, 2024 Master Builder

Islanders Medium Builds Official Sets Pirates Pirates I Pirates Sets

6262: King Kahuka’s Throne

June 1, 2022June 1, 2022 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6232: Skeleton Crew

July 13, 2021July 13, 2021 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6251: Pirate Mini Figures (Sea Mates)

April 9, 2020April 9, 2020 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7250: Clone Scout Walker

February 17, 2025February 17, 2025 Master Builder

Medium Builds Official Sets Technic Technic Sets

854: Go-Kart

August 28, 2023January 6, 2025 Master Builder

Bjarne Tveskov Large Builds Official Sets Space Space Police I Space Police I Sets

6781: SP-Striker

April 19, 2021July 29, 2023 Master Builder

ABCs Jørn Thomsen Medium Builds Official Sets Spyrius Spyrius Sets

6939: Saucer Centurion

November 9, 2019October 1, 2024 Master Builder

Castle Castle Sets Lion Knights Medium Builds Official Sets

6061: Siege Tower

January 6, 2022January 6, 2022 Master Builder

ABCs Bjarne Tveskov Blacktron Blacktron Sets Large Builds Official Sets Space

6954: Renegade

September 7, 2020October 16, 2024 Master Builder

Bjarne Tveskov Duplicate Set Number Futron Sets Futuron Official Sets Small Builds Space

6848: Strategic Pursuer

April 16, 2021March 11, 2024 Master Builder

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

7144: Slave I

October 28, 2021October 28, 2021 Master Builder

Episode III Official Sets Small Builds Star Wars Star Wars Sets

7255: General Grievous Chase

March 2, 2023March 2, 2023 Master Builder

Medium Builds Official Sets Technic Technic Sets

8044: Universal Pneumatic Set

August 23, 2024August 23, 2024 Master Builder

Blacktron II Blacktron II Sets Large Builds Official Sets

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 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.