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 L

January 22, 2021March 14, 2025 Master Builder 5481 Views

From: 1843: Space / Castle Value Pack
Name: Space / Castle Secret Armory ¹
Instructions: View PDF | Download .io File

Contributions

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

← 1843: Space/Castle Value Pack
1843 – Side R →

You May Also Like

6847 – Back B

January 29, 2025January 29, 2025 Master Builder

6834 – Back B

February 9, 2021November 3, 2021 Master Builder

1476: 5 Set Bonus Pack

July 22, 2024October 2, 2024 Master Builder

770 – Back C

February 14, 2024February 14, 2024 Master Builder

6090 – Back A

July 13, 2021March 2, 2023 Master Builder

2153: Robo Stalker

June 15, 2023April 3, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

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

Year Released: 1979Designer: Jens Nygaard KnudsenBricklinkInstructions BOX NOTE – This set has a different bottom with alternates on the rest of

Building LEGOLAND Medium Builds Official Sets

550-2: Windmill

March 3, 2026March 3, 2026 Master Builder

Official Sets Space Port Town Very Small Builds

3067 (Kabaya: Town Space Port 2): Test Shuttle

February 28, 2025February 28, 2025 Master Builder

ABCs Castle Castle Sets Classic Castle Daniel August Krentz Different Set Numbers Duplicate Set Number Extra Large Builds Official Sets

375-2 (6075-2): Castle

November 8, 2019September 5, 2025 Master Builder

Cowboys Official Sets Very Small Builds Western Western Sets

6706: Frontier Patrol

October 10, 2023October 10, 2023 Master Builder

ABCs Classic Space Classic Space Sets Medium Builds Official Sets Space

6780: XT-Starship

October 12, 2021September 9, 2024 Master Builder

Daniel August Krentz Imperial Soldiers Medium Builds Official Sets Pirates Pirates I Pirates Sets

6267: Lagoon Lock-Up

October 11, 2021July 29, 2023 Master Builder

Episode I Official Sets Small Builds Star Wars Star Wars Sets

7126: Battle Droid Carrier

July 26, 2023July 26, 2023 Master Builder

Aquashark Aquazone Aquazone Sets Large Builds Official Sets

6190: Shark’s Crystal Cave

July 13, 2021January 20, 2022 Master Builder

Holiday and Event Holiday and Event Sets Official Sets Small Builds

1628: Santa on Sleigh with Reindeer

November 25, 2020July 25, 2024 Master Builder

Box Marketing Blurb Castle Castle Sets Forestmen Medium Builds Official Sets

6071: Forestmen’s Crossing

October 23, 2019April 3, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6827: Strata Scooter

October 13, 2021October 13, 2021 Master Builder

Castle Castle Sets Official Sets Very Small Builds Wolfpack

1596: Ghostly Hideout

July 25, 2024July 25, 2024 Master Builder

Classic Town Medium Builds Official Sets Recreation Town Town Sets

6359: Horse Trailer

October 8, 2024October 8, 2024 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

6384: Police Station

December 28, 2021December 28, 2021 Master Builder

Exploriens Exploriens Sets Medium Builds Official Sets Space

6899: Nebula Outpost

January 25, 2022September 13, 2024 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.