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

Alternate Builds Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added

375-2 – Inside B

December 16, 2022September 5, 2025 Master Builder 5863 Views

From: 375-2 (6075-2): Castle
Name: TBD
Instructions: View PDF ¹

Contributions

PDF credit: Michael Tax

← 6358 – Back D
6074 – Back C →

You May Also Like

3056 – Side R

July 26, 2020July 26, 2020 Master Builder

Book 6000 – Page 50-51

November 7, 2021February 9, 2023 Master Builder

885 – Back A

January 27, 2024May 13, 2026 Master Builder

710 – Back B

February 22, 2024February 22, 2024 Master Builder

6175 – Back B

January 20, 2022January 20, 2022 Master Builder

7701 – Inside A

March 26, 2026March 26, 2026 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Classic Space Classic Space Sets Large Builds Official Sets Space

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 Master Builder

Year Released: 1986BricklinkInstructions *Alternate Build Connection: BrickJournal Issue 6 Volume 2 Page 39 – Proto 1

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

7110: Landspeeder

June 21, 2022March 1, 2023 Master Builder

Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets

4502: X-wing Fighter (Dagobah)

May 15, 2023May 15, 2023 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6480: Hook and Ladder Truck

July 8, 2022July 8, 2022 Master Builder

Black Knights Castle Castle Sets Official Sets Small Builds

1491: Dual Defender

October 11, 2021October 11, 2021 Master Builder

Imperial Guards Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6247: Bounty Boat

May 10, 2022May 10, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6801: Moon Buggy

September 22, 2019September 28, 2019 Master Builder

ABCs Official Sets Small Builds Space UFO UFO Sets

6829: Radon Rover

August 4, 2020March 22, 2025 Master Builder

Box Plus Classic Space Classic Space Sets Jens Nygaard Knudsen LL Link Official Sets Playscape/Play Stage Box Small Builds Space

918: Space Transport

April 27, 2020January 6, 2026 Master Builder

Bjarne Tveskov Duplicate Set Number Futron Sets Futuron Official Sets Small Builds Space

6848: Strategic Pursuer

April 16, 2021March 11, 2024 Master Builder

Launch Command Official Sets Recreation Town Town Sets Very Small Builds

6516: Moon Walker

April 9, 2020April 9, 2020 Master Builder

Basic Extra Large Builds Official Sets Universal Building Set

735: Basic Building Set

September 15, 2022September 15, 2022 Master Builder

Airport Classic Town Medium Builds Official Sets Town Town Sets

3439: Spy Runner

May 11, 2022May 11, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6806: Surface Hopper

April 16, 2021April 16, 2021 Master Builder

Aquazone Aquazone Sets Box Story Hydronauts Large Builds Official Sets

6180: Hydro Search Sub

February 18, 2025February 18, 2025 Master Builder

Medium Builds Official Sets Paradisa Town Town Sets

6414: Dolphin Point

January 14, 2021December 17, 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.