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

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

920 (483): Alpha-1 Rocket Base

February 2, 2021July 31, 2023 Master Builder 8722 Views

Year Released: 1979
Designer: Jens Nygaard Knudsen
Bricklink
Instructions

Back A

Back A

← 2586 – Back A
920 – Back A →

You May Also Like

6633: Family Car

April 19, 2021April 19, 2021 Master Builder

7190: Millennium Falcon

November 14, 2019November 14, 2019 Master Builder

6856 – Back C

January 9, 2023January 10, 2023 Master Builder

6887 – Back C

October 5, 2019October 25, 2021 Master Builder

6264: Forbidden Cove

July 1, 2022July 1, 2022 Master Builder

6416: Poolside Paradise

June 28, 2022June 28, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Exploriens Exploriens Sets Official Sets Small Builds Space

6854: Alien Fossilizer

July 15, 2022March 22, 2025 Master Builder

Year Released: 1996BricklinkInstructions *Alternate Build Connection: Space Walker

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6806: Surface Hopper

April 16, 2021April 16, 2021 Master Builder

Batman I BATMAN™ BATMAN™ Sets Large Builds Official Sets

7782: The Batwing: Joker’s Aerial Assault

March 27, 2026March 27, 2026 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6503: Sprint Racer

July 9, 2022July 9, 2022 Master Builder

Dino Attack Large Builds Official Sets

7475: Fire Hammer vs. Mutant Lizards

April 27, 2023April 27, 2023 Master Builder

Bonus/Value Pack Sets Futron Sets Futuron Official Sets Small Builds Space

1974-4: Star Quest

September 7, 2023September 8, 2023 Master Builder

Black Knights Castle Castle Sets Medium Builds Official Sets

6057: Sea Serpent

April 14, 2025April 14, 2025 Master Builder

Medium Builds Official Sets Technic Technic Sets

8812: Aero Hawk II

January 22, 2026January 22, 2026 Master Builder

Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker

6543: Sail N’ Fly Marina

July 22, 2022July 22, 2022 Master Builder

Airport Classic Town Large Builds Official Sets Town Town Sets

1687: Midnight Transport

January 25, 2022January 25, 2022 Master Builder

Classic Town Coast Guard Medium Builds Official Sets Town Town Sets

6342: Beach Rescue Chopper

July 15, 2022July 15, 2022 Master Builder

Large Builds Launch Command Official Sets Town Town Sets

6544: Shuttle Transcon 2

July 20, 2022July 20, 2022 Master Builder

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder

Bjarne Tveskov Different Box Versions Futron Sets Futuron Official Sets Small Builds

6884: Aero-Module

September 24, 2019March 17, 2024 Master Builder

Aquashark Aquazone Aquazone Sets Official Sets Very Small Builds

6100: Aquashark Dart

March 20, 2023March 21, 2023 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6929: Starfleet Voyager

September 22, 2019April 3, 2023 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.