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

Alternate Builds Basic Instructions Added LEGOLAND Alternate Builds Medium Alt Build Medium Builds Universal Building Set Universal Building Set Alternate Builds

720 – Instructions C

February 9, 2024February 9, 2024 Master Builder 4679 Views

From: 720: Basic Building Set
Name: Locomotive ¹
Instructions: View PDF

Contributions

Name and PDF submitted on February 7, 2024 by: se1977

← 720 – Instructions B
4789: AT Aquatic Mech →

You May Also Like

6669 – Back A

March 17, 2022March 17, 2022 Master Builder

6367 – Back A

February 17, 2023May 19, 2023 Master Builder

Bjarne Tveskov’s Eagle

May 7, 2023July 29, 2023 Master Builder

10182 – Back B

January 23, 2024January 28, 2025 Master Builder

6381: Motor Speedway

October 5, 2019February 19, 2023 Master Builder

6057 – Back C

April 14, 2025April 14, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Large Builds Official Sets

6972: Polaris I Space Lab

September 12, 2019November 21, 2023 Master Builder

Year Released: 1987BricklinkInstructions *Alternate Build Connection: 1988 Classic Space and Blacktron with Zack Commercial

Airport LEGOLAND Medium Builds Official Sets

371-3: Seaplane

October 8, 2024October 8, 2024 Master Builder

Cargo Classic Town Medium Builds Official Sets Town Town Sets

6375: Trans Air Carrier

November 20, 2020November 20, 2020 Master Builder

Box Story Large Builds Official Sets Robo Force Robo Force Sets Space

2153: Robo Stalker

June 15, 2023April 3, 2024 Master Builder

Classic Town Fire Large Builds Official Sets Town Town Sets

1656: Evacuation Team

July 22, 2026July 22, 2026 Master Builder

Castle Castle Sets Official Sets Small Builds Wolfpack

6038: Wolfpack Renegades

October 14, 2021October 14, 2021 Master Builder

Box Story Duplicate Set Number Medium Builds Ninja Ninja Alternate Builds Ninja Official Sets Official Sets

6083-2: Samurai Stronghold

December 16, 2025December 16, 2025 Master Builder

Cowboys Official Sets Very Small Builds Western Western Sets

6790: Bandit’s Wheelgun

October 10, 2023October 10, 2023 Master Builder

9V Medium Builds Official Sets Train Train Sets

4536: Blue Hopper Car

July 10, 2026July 10, 2026 Master Builder

Medium Builds Official Sets Space Unitron Unitron Sets

1789: Star Hawk II

July 18, 2020July 18, 2020 Master Builder

Castle Castle Sets Fright Knights Official Sets Small Builds

6037: Witch’s Windship

December 29, 2021December 29, 2021 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7250: Clone Scout Walker

February 17, 2025February 17, 2025 Master Builder

Large Builds Official Sets Star Wars Star Wars Sets

7150: TIE Fighter & Y-wing

April 21, 2026April 21, 2026 Master Builder

Creator Expert Extra Large Builds Modular Buildings Collection Official Sets

10182: Café Corner

January 23, 2024January 23, 2024 Master Builder

Castle Castle Sets Forestmen Medium Builds Niels Milan Pedersen Official Sets

6066: Camouflaged Outpost

October 11, 2021July 29, 2023 Master Builder

Black Knights Castle Castle Sets Official Sets Very Small Builds

6034: Black Monarch’s Ghost

January 16, 2022January 16, 2022 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.