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

6086 – Inside A

October 11, 2021October 28, 2021 Master Builder 7600 Views

From: 6086: Black Knight’s Castle
Name: Black Knight’s Stronghold ¹
Instructions: View PDF

Contributions

Name and PDF submitted on September 24, 2021 by: Cor3y

← 6086: Black Knight’s Castle
6086 – Inside B →

You May Also Like

4735 – Back A

June 12, 2024June 17, 2024 Master Builder

6592 – Back C

June 23, 2025June 23, 2025 Master Builder

6844 – Back A

October 22, 2019September 10, 2023 Master Builder

918 – Back E

September 2, 2025September 3, 2025 Master Builder

6848 – Back B

April 16, 2021March 11, 2024 Master Builder

1978 – Back A

April 28, 2023April 28, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Fire Official Sets Small Builds Town Town Sets

6531: Flame Chaser

November 7, 2022November 7, 2022 Master Builder

Year Released: 1991BricklinkInstructions

Drome Racers Official Sets Racers Small Builds

4593: Zero Hurricane & Red Blizzard

January 27, 2025February 21, 2025 Master Builder

Blacktron II Blacktron II Alternate Builds Blacktron II Sets Jørn Thomsen Large Builds Official Sets Space Super Model

6861: Blacktron Super Model

July 29, 2023July 29, 2023 Master Builder

Large Builds Official Sets Race Town Town Sets

6713: Grip-n-Go Challenge

February 10, 2025February 10, 2025 Master Builder

Classic Town Fire Large Builds Official Sets Town Town Sets

6385: Fire House-I

August 7, 2022August 7, 2022 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

3056: Go-Kart

July 26, 2020July 26, 2020 Master Builder

M:Tron M:Tron Sets Official Sets Space Very Small Builds

6833: Beacon Tracer

April 11, 2020April 11, 2020 Master Builder

Jørn Thomsen Official Sets Space Spyrius Spyrius Sets Very Small Builds

1954 (1714, Kabaya: Space 1): Surveillance Scooter

January 26, 2022February 25, 2025 Master Builder

Classic Space Classic Space Sets Jens Nygaard Knudsen Official Sets Small Builds

897: Mobile Missile Command

September 14, 2019July 31, 2023 Master Builder

Divers Medium Builds Official Sets Town Town Sets

6557: Treasure Hunters

December 29, 2021June 28, 2022 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6929: Starfleet Voyager

September 22, 2019April 3, 2023 Master Builder

Extra Large Builds Official Sets Technic Technic Sets

857: Motorcycle

January 6, 2025January 6, 2025 Master Builder

Imperial Guards Official Sets Pirates Pirates I Pirates Sets Small Builds

6266: Cannon Cove

December 27, 2021June 3, 2022 Master Builder

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

4704: The Chamber of the Winged Keys

May 28, 2024May 28, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Space Supplemental

454: Two Lunar Landing Plates

July 11, 2024July 11, 2024 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6536: Aero Hawk

January 22, 2026January 22, 2026 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.