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
- 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

920 – Back C

February 2, 2021October 25, 2021 Master Builder 4119 Views

From: 920 (483): Alpha-1 Rocket Base
Name: Alpha-1 Moving Laboratory ¹
Instructions: View PDF

Contributions

Name and PDF Instructions submitted on January 31, 2021 by: plastic.ati

← 920 – Back B
920 – Back D →

You May Also Like

6389 – Inside A

January 24, 2022January 24, 2022 Master Builder

6698 – Back E

June 28, 2022June 28, 2022 Master Builder

6971 – Inside C

September 14, 2019September 28, 2019 Master Builder

6341 – Back D

August 31, 2022September 17, 2022 Master Builder

4539: Manual Level Crossing

May 22, 2026May 22, 2026 Master Builder

4709 – Back A

June 12, 2024June 17, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Large Builds Official Sets Technic Technic Sets

951: Bulldozer

December 17, 2025December 17, 2025 Master Builder

Year Released: 1979BricklinkInstructions

Black Knights Castle Castle Sets Medium Builds Official Sets

6057: Sea Serpent

April 14, 2025April 14, 2025 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6341: Gas N’ Go Flyer

December 27, 2021December 27, 2021 Master Builder

Official Sets Space Port Town Town Sets Very Small Builds

6452: Mini Rocket Launcher

October 3, 2024October 3, 2024 Master Builder

Castle Castle Sets Forestmen Medium Builds Niels Milan Pedersen Official Sets

6066: Camouflaged Outpost

October 11, 2021July 29, 2023 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6951: Robot Command Center

September 21, 2019September 28, 2019 Master Builder

ABCs Official Sets Race Town Town Sets Very Small Builds

6677: Motocross Racing

June 8, 2023July 31, 2023 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6536: Aero Hawk

January 22, 2026January 22, 2026 Master Builder

Extra Large Builds Goblet of Fire Harry Potter Harry Potter Sets Official Sets

4768: The Durmstrang Ship

May 16, 2023May 16, 2023 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1760: Go-Cart

April 11, 2023April 11, 2023 Master Builder

Fabuland Fabuland Sets Official Sets Very Small Builds

3721: Clive Crocodile on Skateboard

February 26, 2023August 1, 2023 Master Builder

Black Knights Castle Castle Sets Medium Builds Official Sets

6059: Knight’s Stronghold

July 13, 2021July 13, 2021 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6739: Truck & Stunt Trikes

April 16, 2026April 16, 2026 Master Builder

Classic Town Medium Builds Official Sets Police Town Town Sets

6430: Night Patroller

April 9, 2020February 4, 2021 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6481: Construction Crew

April 9, 2020July 4, 2022 Master Builder

Building Classic Town Official Sets Small Builds Town Town Sets

6592: Vacation Hideaway (Weekend Cottage)

June 23, 2025June 23, 2025 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
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.