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 Classic Space Classic Space Sets Large Builds Official Sets Space

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 Master Builder 6842 Views

Year Released: 1986
Bricklink
Instructions

*Alternate Build Connection: BrickJournal Issue 6 Volume 2 Page 39 – Proto 1

Back A

Back A

← 6641: 4-Wheelin’ Truck (Four Wheelin’ Truck)
6783 – Back A →

You May Also Like

7133: Bounty Hunter Pursuit

July 14, 2021July 14, 2021 Master Builder

6983 – Back A

December 22, 2024January 6, 2025 Master Builder

8001: Battle Droid

September 1, 2023September 1, 2023 Master Builder

926 – Back A

October 22, 2019October 13, 2021 Master Builder

6814: Ice Tunnelator

April 6, 2020April 2, 2025 Master Builder

Book 6000 – Page 68-69

October 10, 2023February 5, 2026 Master Builder

EXPLORE MORE OFFICIAL SETS

Medium Builds Official Sets Res-Q Town Town Sets

6462: Res-Q Helicopter

July 10, 2026July 10, 2026 Master Builder

Year Released: 1998BricklinkInstructions

Airport Classic Town Official Sets Town Town Sets Very Small Builds

6529: Ultra Light I

July 14, 2022July 14, 2022 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6668: Recycle Truck

November 18, 2020November 18, 2020 Master Builder

Castle Castle Sets Crusaders Official Sets Small Builds

6042: Dungeon Hunters

October 1, 2024October 1, 2024 Master Builder

Medium Builds Official Sets Pirates Pirates I Pirates Sets

6249: Pirates Ambush

November 16, 2019February 20, 2025 Master Builder

Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds

6246: Crocodile Cage

January 26, 2022January 26, 2022 Master Builder

Indians Official Sets Very Small Builds Western Western Sets

2845: Indian Chief

October 10, 2023October 10, 2023 Master Builder

Aquazone Aquazone Sets Large Builds Official Sets Stingrays

6198: Stingray Stormer

October 29, 2019April 4, 2020 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4563: Load N’ Haul Railroad

July 26, 2022June 23, 2026 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Classic Town Official Sets Recreation Small Builds Town

1720: Cactus Canyon Value Pack

April 14, 2026April 14, 2026 Master Builder

Classic Town Off-Road Official Sets Small Builds Town Town Sets

6659: TV Camera Crew

April 10, 2021April 10, 2021 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6687: Turbo Prop I

December 27, 2021December 27, 2021 Master Builder

Classic Town Off-Road Official Sets Small Builds Town Town Sets

6675: Road & Trail 4×4

March 20, 2023March 20, 2023 Master Builder

ABCs Insectoids Insectoids Sets Official Sets Small Builds

6837: Cosmic Creeper (Mantis Scavenger)

April 2, 2020March 22, 2025 Master Builder

Adventurers Adventurers Sets Dino Island Medium Builds Official Sets

5935: Island Hopper

April 21, 2025April 21, 2025 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

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.