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 Instructions Added Medium Alt Build Medium Builds Space Space Police I Space Police I Alternate Builds

6781 – Back A

April 19, 2021May 17, 2023 Master Builder 4792 Views

From: 6781: SP-Striker
Name: SP-Sentinel ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on November 17, 2021 by: Krysto

← 6781: SP-Striker
6077-2: Forestmen’s River Fortress →

You May Also Like

6879 – Back B

November 20, 2019November 16, 2021 Master Builder

6373: Motorcycle Shop

January 6, 2022January 6, 2022 Master Builder

6738 – Back A

April 13, 2026April 13, 2026 Master Builder

6810 – Back A

September 25, 2019October 25, 2021 Master Builder

6360: Weekend Cottage

October 19, 2019April 4, 2020 Master Builder

6296 – Back B

January 12, 2022January 12, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Adventurers Adventurers Sets Box Story Official Sets Orient Expedition Small Builds

7411: Tygurah’s Roar

December 16, 2025December 16, 2025 Master Builder

Year Released: 2003BricklinkInstructions

Classic Town Official Sets Police Small Builds Town Town Sets

6533: Police 4×4

January 6, 2022January 6, 2022 Master Builder

Box Plus Extra Large Builds FreeStyle FreeStyle Official Sets Official Sets Poster Storage Container

2146: FreeStyle with Storage Case

December 15, 2025December 15, 2025 Master Builder

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

6641: 4-Wheelin’ Truck (Four Wheelin’ Truck)

May 7, 2022May 7, 2022 Master Builder

Official Sets Res-Q Small Builds Town Town Sets

6431: Road Rescue

January 20, 2022January 20, 2022 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6738: Skateboard Challenge

April 13, 2026April 13, 2026 Master Builder

Divers Medium Builds Official Sets Town Town Sets

6557: Treasure Hunters

December 29, 2021June 28, 2022 Master Builder

Bjarne Tveskov Large Builds Official Sets Space Space Police I Space Police I Sets

6781: SP-Striker

April 19, 2021July 29, 2023 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7250: Clone Scout Walker

February 17, 2025February 17, 2025 Master Builder

Belville Belville Sets Lion Knights Medium Builds Official Sets Recreation

5847: Surfers’ Paradise

April 2, 2025April 2, 2025 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6604: Formula-1 Racer

November 25, 2020November 25, 2020 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

BIONICLE BIONICLE Sets Medium Builds Official Sets Playsets

8925: Barraki Deepsea Patrol

March 3, 2026March 3, 2026 Master Builder

Chamber of Secrets Extra Large Builds Harry Potter Harry Potter Sets Official Sets

4730: The Chamber of Secrets

January 23, 2024January 23, 2024 Master Builder

Classic Space Classic Space Sets Mads Rye Official Sets Small Builds

6882: Walking Astro Grappler

September 30, 2019April 2, 2025 Master Builder

Adventurers Adventurers Sets Dino Island Official Sets Small Builds

5975: T-Rex Transport

December 29, 2021December 29, 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
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.