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

ABCs Aquanauts Aquazone Aquazone Sets Box Plus Official Sets Playscape/Play Stage Box Small Builds

1728 (6145): Crystal Crawler {with Aqua Playscape}

August 1, 2023March 22, 2025 Master Builder 6698 Views

Year Released: 1996
Bricklink
Instructions

*Alternate Build Connection: Aqua 5

Playscape/Play Stage Box

Back A

Back A

← 1906: Majisto’s Tower
1728 (6145) – Back A →

You May Also Like

6846 – Back C

September 26, 2019October 25, 2021 Master Builder

6764: Sheriff’s Lock-Up

September 1, 2024September 1, 2024 Master Builder

6375 – Back C

November 20, 2020November 20, 2020 Master Builder

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 Master Builder

6397 – Back B

April 27, 2023May 19, 2023 Master Builder

4731: Dobby’s Release

January 23, 2024January 23, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Large Builds Model Team Model Team Sets Official Sets

5521: Sea Jet

January 12, 2021January 31, 2026 Master Builder

Year Released: 1993BricklinkInstructions

Bjarne Tveskov Futron Sets Futuron Official Sets Small Builds

6875: Hovercraft

September 16, 2019October 16, 2024 Master Builder

Exploriens Exploriens Sets Medium Builds Official Sets

6938: Scorpion Detector

March 21, 2023March 5, 2026 Master Builder

Basic Large Builds Official Sets Universal Building Set

720: Basic Building Set

February 8, 2024February 9, 2024 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6536: Aero Hawk

January 22, 2026January 22, 2026 Master Builder

Life on Mars Life on Mars Sets Official Sets Very Small Builds

7301 (1413, 7309, Kabaya: Life On Mars 4): Rover

February 24, 2025February 25, 2025 Master Builder

Building LEGOLAND Medium Builds Official Sets

550-2: Windmill

March 3, 2026March 3, 2026 Master Builder

Bonus/Value Pack Sets Castle Castle Sets Official Sets Royal Knights Small Builds

1843-3: {Royal Knights Unknown}

September 8, 2023September 13, 2023 Master Builder

Aquaraiders I Aquazone Aquazone Sets Large Builds Official Sets

2161: Aqua Dozer

January 8, 2020April 4, 2020 Master Builder

Bonus/Value Packs Castle Castle Sets Official Sets Royal Knights Small Builds Space Spyrius Spyrius Sets

1843: Space/Castle Value Pack

January 21, 2021September 13, 2023 Master Builder

Bonus/Value Packs Classic Town Fire Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space Town

1722: Rescue/Ice Planet Combo Pack

July 13, 2021April 4, 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

Bjarne Tveskov Blacktron II Blacktron II Sets Official Sets Space Very Small Builds

6812: Grid Trekkor

February 12, 2021July 29, 2023 Master Builder

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

1476: 5 Set Bonus Pack

July 22, 2024October 2, 2024 Master Builder

Extra Large Builds Official Sets Technic Technic Sets

857: Motorcycle

January 6, 2025January 6, 2025 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6699: Cycle Fix-It Shop

October 28, 2025October 28, 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.