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

Concepts and Prototypes LEGO Builders Club LEGO Magazine

Marble Run

February 5, 2025March 22, 2025 Master Builder 5584 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

M:Tron Prototypes

January 23, 2024February 12, 2025 Master Builder

6544 – Back A

July 20, 2022February 22, 2025 Master Builder

Robot Prototypes

January 1, 2024February 11, 2025 Master Builder

Rtron

August 14, 2023February 12, 2025 Master Builder

Spectron Concept

January 22, 2026January 23, 2026 Master Builder

BrickJournal Issue 6 Volume 2 Page 40 – Proto 4

June 21, 2023August 15, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Blacktron II Blacktron II Sets Official Sets Very Small Builds

6832: Super Nova II

October 5, 2019October 5, 2019 Master Builder

Year Released: 1991Bricklink

Classic Space Classic Space Sets Medium Builds Niels Milan Pedersen Official Sets Space

6950: Mobile Rocket Transport

January 12, 2021July 29, 2023 Master Builder

Gas Station Medium Builds Official Sets Town Town Jr Town Sets

6548: Octan Gas Station

October 12, 2021October 12, 2021 Master Builder

Classic Town Extra Large Builds Gas Station Official Sets Town Town Sets Wrecker

6397: Gas N’ Wash Express

July 14, 2021July 14, 2021 Master Builder

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

6833: Beacon Tracer

April 11, 2020April 11, 2020 Master Builder

Castle Castle Sets Fright Knights Official Sets Small Builds

6037: Witch’s Windship

December 29, 2021December 29, 2021 Master Builder

Basic Happy Meal McDonalds Official Sets Polybag Universal Building Set Very Small Builds

1912: Car (Set A, 1)

April 1, 2025April 1, 2025 Master Builder

Black Falcons Castle Castle Sets Daniel August Krentz Large Builds Official Sets

6073: Knight’s Castle

October 23, 2019July 29, 2023 Master Builder

Box Plus Castle Castle Sets Fright Knights Medium Builds Official Sets Playscape/Play Stage Box

6099: Traitor Transport {with Dragon Cave}

April 1, 2025April 1, 2025 Master Builder

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

6543: Sail N’ Fly Marina

July 22, 2022July 22, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6808: Galaxy Trekkor

January 21, 2021January 21, 2021 Master Builder

Box Story Large Builds Ninja Ninja Alternate Builds Ninja Official Sets Official Sets

6088: Robber’s Retreat

January 24, 2022April 3, 2024 Master Builder

ABCs Official Sets Small Builds Space UFO UFO Sets

6829: Radon Rover

August 4, 2020March 22, 2025 Master Builder

Harry Potter Harry Potter Sets Official Sets Prisoner of Azkaban Small Builds

4751: Harry and the Marauder’s Map

May 16, 2023May 16, 2023 Master Builder

Belville Belville Sets Lion Knights Medium Builds Official Sets Recreation

5847: Surfers’ Paradise

April 2, 2025April 2, 2025 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

6360: Weekend Cottage

October 19, 2019April 4, 2020 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.