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

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 5934 Views

Year Released: 1991
Bricklink
Instructions

Set 6877

Set 6877

← 381 – Back E
6861: Blacktron Super Model →

You May Also Like

4565: Freight and Crane Railway

January 5, 2026January 5, 2026 Master Builder

L-Sie

March 14, 2025March 28, 2026 Master Builder

6889 – Back C

January 9, 2023January 13, 2023 Master Builder

6552 – Back B

May 7, 2024May 11, 2024 Master Builder

6765 – Back A

November 10, 2019November 10, 2019 Master Builder

735 – Inside B

September 15, 2022September 15, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

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

6852: Sonar Security

September 22, 2020July 29, 2023 Master Builder

Year Released: 1993Designer: Jørn ThomsenBricklinkInstructions

Classic Town Gas Station Medium Builds Official Sets Town Town Sets Wrecker

6594: Gas Transit

November 19, 2020July 8, 2025 Master Builder

Basic Large Builds Official Sets Universal Building Set

720: Basic Building Set

February 8, 2024February 9, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6846: Tri-Star Voyager

September 26, 2019September 28, 2019 Master Builder

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder

Box Story Imperial Guards Large Builds Official Sets Pirates Pirates I Pirates Sets

6271: Imperial Flagship

January 6, 2022February 20, 2025 Master Builder

Life on Mars Life on Mars Sets Official Sets Very Small Builds

7300 (1414, 7308, Kabaya: Life On Mars 1): Double Hover

February 24, 2025February 25, 2025 Master Builder

Classic Town Gas Station Medium Builds Official Sets Town Town Sets Wrecker

6562: Gas Stop Shop

September 19, 2022September 19, 2022 Master Builder

ABCs Large Builds Official Sets Space UFO UFO Sets

6900: Cyber Saucer

October 2, 2024March 22, 2025 Master Builder

ABCs Insectoids Insectoids Sets Official Sets Small Builds

6837: Cosmic Creeper (Mantis Scavenger)

April 2, 2020March 22, 2025 Master Builder

ABCs Jørn Thomsen Medium Builds Official Sets Spyrius Spyrius Sets

6939: Saucer Centurion

November 9, 2019October 1, 2024 Master Builder

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

4766: Graveyard Duel

May 16, 2023December 16, 2025 Master Builder

Castle Castle Sets Forestmen Medium Builds Niels Milan Pedersen Official Sets

6054: Forestmen’s Hideout

April 10, 2021July 29, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder

Exploriens Exploriens Sets Medium Builds Official Sets Space

6899: Nebula Outpost

January 25, 2022September 13, 2024 Master Builder

Classic Space Classic Space Sets Mads Rye Official Sets Small Builds

6882: Walking Astro Grappler

September 30, 2019April 2, 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.