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 Small Alt Build Small Builds Space

920 – Back E

February 2, 2021October 25, 2021 Master Builder 5071 Views

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

Contributions

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

← 920 – Back D
920 – Back F →

You May Also Like

6827 – Back B

October 13, 2021May 18, 2023 Master Builder

Telescope Space

February 19, 2025February 19, 2025 Master Builder

4940: Granite Grinder

April 4, 2020April 4, 2020 Master Builder

6545 – Back B

June 2, 2022June 2, 2022 Master Builder

6515 – Back A

May 18, 2022May 23, 2022 Master Builder

6469 – Back A

March 3, 2025March 3, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Classic Space Classic Space Sets Medium Builds Official Sets Space

6892: Modular Space Transport

November 17, 2021July 31, 2023 Master Builder

Year Released: 1986BricklinkInstructions *Alternate Build Connection: 1987 Medium US (119517/119617-US)

Blacktron Blacktron Sets Daniel August Krentz Extra Large Builds Official Sets Space

6987: Message Intercept Base

September 12, 2019March 2, 2026 Master Builder

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Jørn Thomsen Official Sets Space Space Police II Space Police II Sets Very Small Builds

1916 (Kabaya: Space 3): Starion Patrol

January 19, 2022February 25, 2025 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

Extra Large Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets

6286: Skull’s Eye Schooner

February 8, 2022July 29, 2023 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

6545: Search N’ Rescue

June 2, 2022June 2, 2022 Master Builder

Classic Town Coast Guard Official Sets Small Builds Town Town Sets

6518: Baja Buggy

May 23, 2022May 23, 2022 Master Builder

Large Builds M:Tron M:Tron Alternate Builds M:Tron Sets Official Sets Space Super Model

6862: Secret Space Voyager

July 29, 2023July 29, 2023 Master Builder

Medium Builds Official Sets Paradisa Town Town Sets

6405: Sunset Stables

September 15, 2022September 15, 2022 Master Builder

Bjarne Tveskov Different Box Versions Futron Sets Futuron Official Sets Small Builds

6884: Aero-Module

September 24, 2019March 17, 2024 Master Builder

Classic Town Hospital Medium Builds Official Sets Town Town Sets

6356: Med-Star Rescue Plane

March 16, 2022March 16, 2022 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6012: Siege Cart

September 24, 2024September 24, 2024 Master Builder

Official Sets Scala Scala Alternate Builds Scala Sets Small Builds

3152: Playroom for the Baby Thomas

July 10, 2024July 10, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6826: Crater Crawler

September 26, 2019October 22, 2019 Master Builder

ABCs Classic Space Classic Space Sets Large Builds Official Sets Space

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 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.