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 Blacktron II Blacktron II Alternate Builds Instructions Added Large Alt Build Large Builds

6988 – Back B

November 29, 2025December 1, 2025 Master Builder 4961 Views

From: 6988: Alpha Centauri Outpost
Name: Proxima Centauri Central ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on November 29, 2025 by: IceAge2002

← 6506 – Back C
6988 – Back C →

You May Also Like

6663 – Back A

June 6, 2022June 6, 2022 Master Builder

1656 – Back A

July 22, 2026July 22, 2026 Master Builder

7186 – Instructions 3

April 21, 2026April 21, 2026 Master Builder

7725 – Inside B

November 4, 2022August 1, 2023 Master Builder

7134 – Back A

December 29, 2021December 29, 2021 Master Builder

6932 – Back B

September 24, 2019January 10, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Official Sets Very Small Builds

6803: Space Patrol

September 21, 2019February 15, 2026 Master Builder

Year Released: 1983Bricklink

Airport Classic Town Official Sets Small Builds Town Town Sets

6615: Eagle Stunt Flyer

January 5, 2022January 5, 2022 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6237: Pirates’ Plunder

February 8, 2022February 8, 2022 Master Builder

Black Knights Castle Castle Sets Medium Builds Official Sets

6057: Sea Serpent

April 14, 2025April 14, 2025 Master Builder

Construction LEGOLAND Medium Builds Official Sets

730: Steam Shovel with Carrier

February 21, 2024February 21, 2024 Master Builder

Basic Happy Meal McDonalds Official Sets Polybag Universal Building Set Very Small Builds

1912: Car (Set A, 1)

April 1, 2025April 1, 2025 Master Builder

Adventurers Adventurers Sets Dino Island Official Sets Small Builds

5920: Island Racer

July 26, 2020July 26, 2020 Master Builder

Classic Town Extra Large Builds Fire Official Sets Town Town Sets

6389: Fire Control Center

January 24, 2022January 24, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6804: Surface Rover

September 25, 2019September 28, 2019 Master Builder

Bjarne Tveskov Blacktron II Blacktron II Sets Official Sets Space Very Small Builds

6812: Grid Trekkor

February 12, 2021July 29, 2023 Master Builder

Castle Castle Sets Fright Knights Medium Builds Official Sets

6047: Traitor Transport

November 18, 2021November 18, 2021 Master Builder

Classic Town Official Sets Town Town Sets Traffic Very Small Builds

6613: Telephone Booth

November 6, 2024November 6, 2024 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 Large Builds Official Sets Sorcerer's Stone

4707: Hagrid’s Hut

December 29, 2021December 29, 2021 Master Builder

Blacktron Blacktron Sets Box Marketing Blurb Large Builds Official Sets

6941: Battrax

September 13, 2019March 28, 2026 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

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.