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

Concepts and Prototypes Grey:tron Grøntrøn Space

Greytron

February 11, 2025February 11, 2025 Master Builder 7666 Views

Misc
Theme: Greytron (Not Official)

BrickJournal: Issue 6 Volume 2 – Page 42
TwoMorrows Publishing
Photo Credit: Niels Milan Pedersen’s personal LEGO archives

LEGO® Space: 1978-1992 – Page 156
Published: 2023
By: Tim Johnson
Dark Horse Books

Name: TBD
Submitted By: USER
Instructions:

← 6713 – Back B
Aquadome →

You May Also Like

6892 – Back C

March 17, 2022June 1, 2023 Master Builder

6973 – Back D

September 26, 2019May 10, 2024 Master Builder

1974-4 – Back A

January 9, 2026January 12, 2026 Master Builder

Spectron Concept

January 22, 2026January 23, 2026 Master Builder

6931 – Inside B

November 4, 2023November 7, 2023 Master Builder

6876 – Back C

November 16, 2019July 31, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Large Builds Official Sets

6972: Polaris I Space Lab

September 12, 2019November 21, 2023 Master Builder

Year Released: 1987BricklinkInstructions *Alternate Build Connection: 1988 Classic Space and Blacktron with Zack Commercial

Jørn Thomsen Large Builds Official Sets Western Western Sets

6765: Gold City Junction

November 10, 2019July 29, 2023 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7250: Clone Scout Walker

February 17, 2025February 17, 2025 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6509: Red Devil Racer

October 12, 2021October 12, 2021 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6736: Beach Lookout

April 7, 2026April 7, 2026 Master Builder

Classic Town Medium Builds Official Sets Race Town Town Sets

6335: Indy Transport

November 29, 2023November 29, 2023 Master Builder

ABCs Blacktron II Blacktron II Sets Jørn Thomsen Large Builds Official Sets Space

6981: Aerial Intruder

September 22, 2019August 15, 2023 Master Builder

ABCs Large Builds Official Sets Robo Force Robo Force Sets Space

2152: Robo Raptor

January 14, 2021March 22, 2025 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6590: Vacation Camper

July 8, 2022July 8, 2022 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets

6891: Gamma-V Laser Craft

September 13, 2019August 3, 2024 Master Builder

Bjarne Tveskov Official Sets Space Space Police I Space Police I Sets Very Small Builds

6831: Message Decoder

May 3, 2020July 29, 2023 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6668: Recycle Truck

November 18, 2020November 18, 2020 Master Builder

Castle Castle Sets Knights Kingdom II Large Builds Official Sets

8876: Scorpion Prison Cave

January 20, 2026January 20, 2026 Master Builder

9V Medium Builds Official Sets Train Train Sets

4536: Blue Hopper Car

July 10, 2026July 10, 2026 Master Builder

Classic Space Classic Space Sets Mads Rye Official Sets Small Builds

6882: Walking Astro Grappler

September 30, 2019April 2, 2025 Master Builder

Classic Town Large Builds Official Sets Recreation Town Town Sets

6552: Rocky River Retreat

July 15, 2022July 15, 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
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.