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 LEGO Builders Club LEGO Magazine

Marble Run

February 5, 2025March 22, 2025 Master Builder 6333 Views

Misc
Build: Marble Run
Submitted By: USER
Instructions:

Bricks n Pieces: Autumn 1987 – Page 10
UK LEGO Club Magazine

← Frisk i Trafik – Page 14-15
Frisk i Trafik – Page 6-7 →

You May Also Like

Robo Spy

March 22, 2025March 22, 2025 Master Builder

Space Skeletal Horse Concept

January 22, 2026January 22, 2026 Master Builder

6544 – Back A

July 20, 2022February 22, 2025 Master Builder

Space Police II Concept

February 23, 2023February 11, 2025 Master Builder

Blacktron Concept

February 23, 2023February 11, 2025 Master Builder

RoBo Bug

March 22, 2025March 22, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Official Sets Small Builds UFO UFO Sets

6836: V-Wing Fighter

October 24, 2019March 22, 2025 Master Builder

Year Released: 1997BricklinkInstructions *Alternate Build Connection: Alien Planet Cruiser II

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

6896: Celestial Forager

January 26, 2022July 31, 2023 Master Builder

Classic Town Official Sets Race Small Builds Town Town Sets

6646: Screaming Patriot

March 16, 2022March 16, 2022 Master Builder

Castle Castle Sets Duplicate Set Number Large Builds Official Sets Wolfpack

6075-1: Wolfpack Tower

October 11, 2021March 11, 2024 Master Builder

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

4719: Quality Quidditch Supplies

March 22, 2025March 22, 2025 Master Builder

Blacktron II Blacktron II Alternate Builds Blacktron II Sets Jørn Thomsen Large Builds Official Sets Space Super Model

6861: Blacktron Super Model

July 29, 2023July 29, 2023 Master Builder

ABCs Large Builds Official Sets Robo Force Robo Force Sets Space

2152: Robo Raptor

January 14, 2021March 22, 2025 Master Builder

Castle Castle Sets Official Sets Royal Knights Very Small Builds

1752: Boat with Armor

April 10, 2023April 10, 2023 Master Builder

Airport Classic Town Large Builds Official Sets Town Town Sets

1687: Midnight Transport

January 25, 2022January 25, 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

Building Classic Town Medium Builds Official Sets Town Town Sets

1484: Weetabix Town House

December 28, 2021December 28, 2021 Master Builder

Classic Town Large Builds Official Sets Race Town Town Sets

6484: F1 Hauler

March 21, 2023March 21, 2023 Master Builder

Cargo Classic Town Medium Builds Official Sets Town Town Sets

6367: Truck

February 17, 2023February 17, 2023 Master Builder

Medium Builds Official Sets Technic Technic Sets

8812: Aero Hawk II

January 22, 2026January 22, 2026 Master Builder

Drome Racers Official Sets Racers Very Small Builds

4583: Maverick Storm

October 22, 2021February 21, 2025 Master Builder

Hospital LEGOLAND Medium Builds Official Sets

780: Road Construction Set

February 14, 2024February 14, 2024 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.