Skip to content

Back of the Box Builds

LEGO Alternate Builds!

SETS
- Adventurers
- Aquazone
- 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
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

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

720 – Front A

February 8, 2024February 9, 2024 Master Builder 3895 Views

From: 720: Basic Building Set
Name: Gate House ¹
Instructions: View PDF

Contributions

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

← 720: Basic Building Set
720 – Front B →

You May Also Like

6832 – Back C

October 5, 2019October 25, 2021 Master Builder

1694 – Back A

February 9, 2021March 14, 2025 Master Builder

6675 – Back C

April 27, 2023May 19, 2023 Master Builder

6440 – Back C

July 8, 2022July 12, 2022 Master Builder

4950 – Back A

November 10, 2019December 16, 2019 Master Builder

6389 – Back B

January 24, 2022January 24, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

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

Year Released: 1991Designer: Jørn ThomsenBricklinkInstructions

Classic Space Classic Space Sets Official Sets Small Builds Space

6870: Space Probe Launcher

January 12, 2021January 12, 2021 Master Builder

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

4720: Knockturn Alley

July 9, 2024July 9, 2024 Master Builder

Duplicate Set Number Official Sets UFO UFO Sets Very Small Builds

6901-2: Space Plane

December 16, 2025December 16, 2025 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6536: Aero Hawk

January 22, 2026January 22, 2026 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder

ABCs Jørn Thomsen Medium Builds Official Sets Space Spyrius Spyrius Sets

6889: Recon Robot

October 24, 2019September 9, 2024 Master Builder

Classic Space Classic Space Sets Different Box Versions Different Set Numbers Jens Nygaard Knudsen LL Link Medium Builds Official Sets Space

924 (487): Space Cruiser

January 25, 2022October 17, 2024 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6017: King’s Oarsman

September 24, 2024September 24, 2024 Master Builder

Classic Town Medium Builds Official Sets Race Town Town Sets

6334: Wave Jump Racers

June 27, 2022June 27, 2022 Master Builder

Construction LEGOLAND Medium Builds Official Sets

730: Steam Shovel with Carrier

February 21, 2024February 21, 2024 Master Builder

Aquashark Aquazone Aquazone Sets Official Sets Very Small Builds

6135: Spy Shark

March 21, 2023March 21, 2023 Master Builder

Classic Town Gas Station Official Sets Small Builds Town Town Sets

671: Shell Fuel Pumper

October 20, 2019April 4, 2020 Master Builder

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

Classic Town Official Sets Small Builds Town Town Sets Traffic

6694: Car with Camper

May 19, 2022May 19, 2022 Master Builder

Bonus/Value Pack Sets Castle Castle Sets Forestmen Official Sets Small Builds

1974-3: Smuggler’s Hayride

September 7, 2023September 8, 2023 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
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.