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 6965 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

6780 – Back E

April 4, 2022April 5, 2022 Master Builder

1789 – Back B

July 18, 2020July 18, 2020 Master Builder

6971 – Back A

September 14, 2019October 25, 2021 Master Builder

924 – Back B

January 25, 2022September 11, 2023 Master Builder

6815 – Back A

July 11, 2022August 7, 2022 Master Builder

Book 6000 – Page 74-75

January 15, 2022October 6, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Box Marketing Blurb Castle Castle Sets Forestmen Medium Builds Official Sets

6071: Forestmen’s Crossing

October 23, 2019April 3, 2024 Master Builder

Year Released: 1990BricklinkInstructions The box reads, “Creativity and Quality Craftsmanship are the key ingredients in this and all LEGO® brand building

Classic Town Fire Medium Builds Official Sets Town Town Sets

6340: Hook & Ladder

December 29, 2021December 29, 2021 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6737: Wake Rider (Wave Catcher)

April 7, 2026April 7, 2026 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6821: Shovel Buggy (Geological Inspection)

February 17, 2026February 17, 2026 Master Builder

Bonus/Value Pack Alternate Builds Bonus/Value Pack Sets Bonus/Value Packs Medium Builds Official Sets Space Port Town Town Sets

6469: Spaceport Bonus Pack

March 3, 2025March 3, 2025 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6940: Alien Moon Stalker

September 12, 2019September 12, 2024 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6357: Stunt ‘Copter N’ Truck

January 28, 2022January 28, 2022 Master Builder

Imperial Guards Medium Builds Official Sets Pirates Pirates I Pirates Sets

6263: Imperial Outpost

February 21, 2025February 21, 2025 Master Builder

ABCs Classic Space Classic Space Sets Large Builds Official Sets

6952: Solar Power Transporter

September 22, 2019March 20, 2025 Master Builder

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

7128: Speeder Bikes

July 14, 2021July 14, 2021 Master Builder

Medium Builds Official Sets Pirates Pirates I Pirates Sets

6249: Pirates Ambush

November 16, 2019February 20, 2025 Master Builder

LEGOLAND Medium Builds Official Sets Space

358: Rocket Base

March 5, 2026March 5, 2026 Master Builder

Insectoids Insectoids Sets Large Builds Official Sets

6977: Arachnoid Star Base

November 9, 2019November 9, 2019 Master Builder

ABCs M:Tron M:Tron Sets Official Sets Small Builds Space

6877: Vector Detector

June 7, 2021October 14, 2024 Master Builder

Launch Command Medium Builds Official Sets Town Town Sets

6336: Launch Response Unit

July 12, 2021July 12, 2021 Master Builder

Large Builds Model Team Model Team Sets Official Sets

5521: Sea Jet

January 12, 2021January 31, 2026 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.