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

Bonus/Value Pack Alternate Builds Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Alternate Builds

1843 – Side R

January 22, 2021March 14, 2025 Master Builder 6043 Views

From: 1843: Space / Castle Value Pack
Name: Space / Castle Catapult and Tracking Station ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF, and .io file submitted on January 29, 2021 by: Mr.AstonishedRaccoon

← 1843 – Side L
1843 – Bottom →

You May Also Like

6770 – Back A

September 11, 2023September 11, 2023 Master Builder

6928: Uranium Search Vehicle

January 12, 2021October 21, 2024 Master Builder

6699 – Back D

October 28, 2025October 28, 2025 Master Builder

6990 – Back C

August 30, 2020March 10, 2025 Master Builder

6061 – Inside A

July 2, 2023July 12, 2023 Master Builder

6679: Dark Shark

December 28, 2021December 28, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Year Released: 1998BricklinkInstructions *Alternate Build Connection: Aqua Rover (LEGO Mania Magazine: May-June 1998)

Classic Town Official Sets Town Town Sets Traffic Very Small Builds

6501: Sport Convertible

July 8, 2022July 8, 2022 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs M:Tron M:Tron Sets Official Sets Space Very Small Builds

9401: M:Tron Team

February 18, 2026March 7, 2026 Master Builder

Episode IV/V/VI Medium Builds Official Sets Star Wars Star Wars Sets

4480: Jabba’s Palace

March 18, 2022March 18, 2022 Master Builder

ABCs Classic Space Classic Space Sets Large Builds Official Sets Space

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 Master Builder

Harry Potter Harry Potter Sets Medium Builds Official Sets Sorcerer's Stone

4714: Gringott’s Bank

March 2, 2023March 2, 2023 Master Builder

Castle Castle Sets Lion Knights Official Sets Very Small Builds

6016: Knight’s Arsenal

October 12, 2021October 12, 2021 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1096: Race Buggy

July 26, 2020July 26, 2020 Master Builder

Large Builds Official Sets Samsonite Samsonite Sets Town Town Sets

725-3: Town Plan

October 9, 2024October 9, 2024 Master Builder

Classic Town Fire Official Sets Town Town Sets Very Small Builds

6505: Fire Chief’s Car

July 8, 2022July 8, 2022 Master Builder

Divers Medium Builds Official Sets Town Town Sets

6558: Shark Cage Cove

December 29, 2021December 29, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6871: Star Patrol Launcher

September 27, 2019September 30, 2019 Master Builder

Episode II Medium Builds Official Sets Star Wars Star Wars Sets

7143: Jedi Starfighter

December 29, 2021December 29, 2021 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6739: Truck & Stunt Trikes

April 16, 2026April 16, 2026 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6880: Surface Explorer

May 4, 2020May 4, 2020 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1750: Renault Formula 1 Racer

July 13, 2021July 13, 2021 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.