Skip to content
Back of the Box Builds

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
    • Submit Instructions!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • How BOTBB was Built
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP
Blacktron Blacktron Sets Daniel August Krentz Extra Large Builds Official Sets Space 

6987: Message Intercept Base

September 12, 2019March 2, 2026 Master Builder 12563 Views

Year Released: 1988
Designer: Daniel August Krentz
Bricklink
Instructions

Back A
Back B
Back C
Back D
  • 6940: Alien Moon Stalker →

You May Also Like

2788: Katie’s Kitchen

July 10, 2024July 10, 2024 Master Builder

6875 – Back D

September 16, 2019March 14, 2025 Master Builder

6155: Deep Sea Predator

May 10, 2022May 10, 2022 Master Builder

6949 – Back C

August 31, 2022September 19, 2022 Master Builder

6818: Cyborg Scout

July 18, 2022July 18, 2022 Master Builder

6900 – Back A

June 15, 2026June 23, 2026 Master Builder

EXPLORE MORE OFFICIAL SETS

1731 (1711, Kabaya: Space 4): Ice Planet Scooter
Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Official Sets Space Very Small Builds 

1731 (1711, Kabaya: Space 4): Ice Planet Scooter

April 6, 2020March 10, 2025 Master Builder

Year Released: 1994Designer: Jørn ThomsenBricklinkInstructions *Kabaya: Space 4 is listed on Bricklink as 3014: Ice Planet Scooter This set is

6891: Gamma-V Laser Craft
Classic Space Classic Space Sets Medium Builds Official Sets 

6891: Gamma-V Laser Craft

September 13, 2019August 3, 2024 Master Builder
6110: Solo Sub
Aquazone Aquazone Sets Hydronauts Official Sets Small Builds 

6110: Solo Sub

February 13, 2025February 13, 2025 Master Builder
4504: Millennium Falcon (Redesign)
Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets 

4504: Millennium Falcon (Redesign)

May 15, 2023May 15, 2023 Master Builder
6349: Vacation House
Building Classic Town Medium Builds Official Sets Town Town Sets 

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder
5948: Desert Expedition
Adventurers Adventurers Sets Desert Medium Builds Official Sets 

5948: Desert Expedition

October 8, 2024October 8, 2024 Master Builder
7303 (1415, Kabaya: Life On Mars 3): Jet Scooter
Life on Mars Life on Mars Sets Official Sets Very Small Builds 

7303 (1415, Kabaya: Life On Mars 3): Jet Scooter

February 25, 2025February 25, 2025 Master Builder
4593: Zero Hurricane & Red Blizzard
Drome Racers Official Sets Racers Small Builds 

4593: Zero Hurricane & Red Blizzard

January 27, 2025February 21, 2025 Master Builder
926 (493): Space Command Center
Classic Space Classic Space Sets Jens Nygaard Knudsen Medium Builds Official Sets Space 

926 (493): Space Command Center

October 22, 2019July 31, 2023 Master Builder
6854: Alien Fossilizer
ABCs Exploriens Exploriens Sets Official Sets Small Builds Space 

6854: Alien Fossilizer

July 15, 2022March 22, 2025 Master Builder
7260: Wookiee Catamaran
Episode III Large Builds Official Sets Star Wars Star Wars Sets 

7260: Wookiee Catamaran

March 1, 2023March 1, 2023 Master Builder
6764: Sheriff’s Lock-Up
Medium Builds Official Sets Western Western Sets 

6764: Sheriff’s Lock-Up

September 1, 2024September 1, 2024 Master Builder
6085: Black Monarch’s Castle
Black Knights Castle Castle Sets Extra Large Builds Niels Milan Pedersen Official Sets 

6085: Black Monarch’s Castle

July 13, 2021July 29, 2023 Master Builder
1628: Santa on Sleigh with Reindeer
Holiday and Event Holiday and Event Sets Official Sets Small Builds 

1628: Santa on Sleigh with Reindeer

November 25, 2020July 25, 2024 Master Builder
6592: Vacation Hideaway (Weekend Cottage)
Building Classic Town Official Sets Small Builds Town Town Sets 

6592: Vacation Hideaway (Weekend Cottage)

June 23, 2025June 23, 2025 Master Builder
8956: Stone Chopper
Official Sets Power Miners Power Miners Sets Small Builds 

8956: Stone Chopper

March 27, 2026March 27, 2026 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

Logo
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.