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 Space

Alien Prototype

February 23, 2023February 12, 2025 Master Builder 6400 Views

Misc
Theme: Space

BrickJournal: Issue 6 Volume 2 – Page 41
TwoMorrows Publishing
Photo Credit: Niels Milan Pedersen’s personal LEGO archives

Build: TBD
Submitted By: USER
Instructions

← Space Police II Concept
BrickJournal Issue 6 Volume 2 Page 42 – Concept 1 →

You May Also Like

1498: Spy-Bot

March 11, 2024March 11, 2024 Master Builder

6844 – Back A

October 22, 2019September 10, 2023 Master Builder

6892: Modular Space Transport

November 17, 2021July 31, 2023 Master Builder

6883: Terrestrial Rover

October 22, 2019October 21, 2024 Master Builder

6950: Mobile Rocket Transport

January 12, 2021July 29, 2023 Master Builder

6975 – Back B

June 25, 2025July 21, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets

6209: Slave I (2nd edition)

February 1, 2024February 1, 2024 Master Builder

Year Released: 2006BricklinkInstructions

Bjarne Tveskov Futron Sets Futuron Medium Builds Official Sets

6925: Interplanetary Rover

September 25, 2019July 29, 2023 Master Builder

Basic Large Builds Official Sets Universal Building Set

710: Universal Building Set

February 22, 2024February 22, 2024 Master Builder

Battle Vehicles BIONICLE BIONICLE Sets Extra Large Builds Official Sets

8942: Jetrax T6

March 4, 2026March 4, 2026 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6480: Hook and Ladder Truck

July 8, 2022July 8, 2022 Master Builder

Black Knights Castle Castle Sets Extra Large Builds Niels Milan Pedersen Official Sets

6086: Black Knight’s Castle

October 11, 2021July 29, 2023 Master Builder

Boat Fire Medium Builds Official Sets

775: Fire Fighter Ship

July 22, 2024July 22, 2024 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6509: Red Devil Racer

October 12, 2021October 12, 2021 Master Builder

Aquazone Aquazone Sets Box Story Hydronauts Large Builds Official Sets

6180: Hydro Search Sub

February 18, 2025February 18, 2025 Master Builder

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

4707: Hagrid’s Hut

December 29, 2021December 29, 2021 Master Builder

Aquazone Aquazone Sets Box Plus Large Builds Official Sets Playscape/Play Stage Box Stingrays

6109: Sea Creeper {with Giant Ray}

January 19, 2022April 1, 2025 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6929: Starfleet Voyager

September 22, 2019April 3, 2023 Master Builder

Medium Builds Official Sets Town Town Sets

6551: Checkered Flag 500

November 21, 2023November 21, 2023 Master Builder

Holiday and Event Holiday and Event Sets Official Sets Very Small Builds

1627: Santa Polybag

May 2, 2023May 2, 2023 Master Builder

Large Builds LEGOLAND Official Sets Space

565: Moon Landing

July 11, 2024July 11, 2024 Master Builder

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

7110: Landspeeder

June 21, 2022March 1, 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.