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

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 6825 Views

Year Released: 1991
Bricklink
Instructions

Set 6877

Set 6877

← 381 – Back E
6861: Blacktron Super Model →

You May Also Like

6985 – Back A

September 28, 2019November 18, 2021 Master Builder

6078 – Back A

January 12, 2022March 2, 2023 Master Builder

6848 – Back B

April 16, 2021March 11, 2024 Master Builder

6851 – Back B

October 24, 2019October 25, 2021 Master Builder

6115: Shark Scout

April 9, 2020March 21, 2023 Master Builder

6441: Deep Reef Refuge

November 6, 2019December 29, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Adventurers Adventurers Sets Box Plus Jungle Medium Builds Official Sets Playscape/Play Stage Box Storage Container

5956: Expedition Balloon

August 31, 2024March 5, 2026 Master Builder

Year Released: 1999BricklinkInstructions

Castle Castle Sets Dragon Knights Official Sets Small Builds

6020: Magic Shop

December 28, 2021December 28, 2021 Master Builder

Classic Town Extra Large Builds Fire Official Sets Town Town Sets

6389: Fire Control Center

January 24, 2022January 24, 2022 Master Builder

Blacktron II Blacktron II Alternate Builds Blacktron II Sets Bonus/Value Pack Sets Bonus/Value Packs Large Builds Official Sets Space Super Model

4741: Blacktron Super Vehicle Value 3-Pack

February 19, 2026February 20, 2026 Master Builder

Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds

6256: Islander Catamaran

June 6, 2022June 6, 2022 Master Builder

ABCs Bjarne Tveskov Extra Large Builds Futron Sets Futuron Official Sets Space

6990: Futuron Monorail Transport System

August 30, 2020February 12, 2025 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Official Sets Small Builds

1597: Castle 3-Pack

July 22, 2024January 20, 2026 Master Builder

ABCs Exploriens Exploriens Sets Official Sets Small Builds Space

6854: Alien Fossilizer

July 15, 2022March 22, 2025 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6668: Recycle Truck

November 18, 2020November 18, 2020 Master Builder

Building Classic Town Large Builds Official Sets Town Town Sets

6388: Holiday Home with Caravan

July 1, 2022July 1, 2022 Master Builder

Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker

6542: Launch & Load Seaport

August 1, 2022August 1, 2022 Master Builder

Extra Large Builds Official Sets Technic Technic Sets

857: Motorcycle

January 6, 2025January 6, 2025 Master Builder

Medium Builds Official Sets Pirates Pirates I Pirates Sets

6261: Raft Raiders

April 7, 2026April 7, 2026 Master Builder

9V Official Sets Small Builds Town Train Train Sets

4525: Road and Rail Repair

July 22, 2026July 22, 2026 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6609: Race Car

February 12, 2024February 12, 2024 Master Builder

Airport Classic Town Medium Builds Official Sets Town Town Sets

1818: Aircraft and Ground Support Equipment and Vehicle

April 7, 2025April 7, 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
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.