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
Large Builds M:Tron M:Tron Alternate Builds M:Tron Sets Official Sets Space Super Model 

6862: Secret Space Voyager

July 29, 2023July 29, 2023 Master Builder 6824 Views

Year Released: 1991
Bricklink
Instructions

Set 6877
Set 6896
Set 6923
  • ← 381 – Back E
  • 6861: Blacktron Super Model →

You May Also Like

6541 – Back G

February 5, 2023February 13, 2023 Master Builder

6951 – Side R

September 21, 2019October 25, 2021 Master Builder

5958 – Back C

October 28, 2019April 4, 2020 Master Builder

6402: Sidewalk Cafe

October 5, 2019January 14, 2021 Master Builder

6815: Hovertron

June 28, 2022June 28, 2022 Master Builder

565: Moon Landing

July 11, 2024July 11, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

6604: Formula-1 Racer
Official Sets Race Town Town Sets Very Small Builds 

6604: Formula-1 Racer

November 25, 2020November 25, 2020 Master Builder

Year Released: 1985BricklinkInstructions

6589: Radical Racer {with Rocky Ridge Playscape}
Box Plus Extreme Team Official Sets Playscape/Play Stage Box Small Builds Town Town Sets 

6589: Radical Racer {with Rocky Ridge Playscape}

February 27, 2023October 8, 2024 Master Builder
3439: Spy Runner
Airport Classic Town Medium Builds Official Sets Town Town Sets 

3439: Spy Runner

May 11, 2022May 11, 2022 Master Builder
6541: Intercoastal Seaport
ABCs Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker 

6541: Intercoastal Seaport

January 25, 2022February 12, 2025 Master Builder
6825: Cosmic Comet
Classic Space Classic Space Sets Official Sets Small Builds 

6825: Cosmic Comet

September 12, 2019March 18, 2024 Master Builder
6909: Sonic Stinger with Promotional Mask
ABCs Box Plus Insectoids Insectoids Sets Mask Official Sets Small Builds Space 

6909: Sonic Stinger with Promotional Mask

October 4, 2024March 22, 2025 Master Builder
6898: Ice-Sat V
Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Medium Builds Official Sets Space 

6898: Ice-Sat V

June 8, 2020July 29, 2023 Master Builder
6346: Shuttle Launching Crew
Airport Classic Town Large Builds Official Sets Town Town Sets 

6346: Shuttle Launching Crew

November 20, 2020August 10, 2026 Master Builder
8957: Mine Mech
Official Sets Power Miners Power Miners Sets Small Builds 

8957: Mine Mech

March 27, 2026March 27, 2026 Master Builder
6871: Star Patrol Launcher
Classic Space Classic Space Sets Official Sets Small Builds 

6871: Star Patrol Launcher

September 27, 2019September 30, 2019 Master Builder
1967: System Bonus Pack
Bonus/Value Packs Classic Space Classic Space Sets Duplicate Set Number Official Sets Small Builds Space 

1967: System Bonus Pack

February 13, 2025February 13, 2025 Master Builder
6454: Countdown Corner
Medium Builds Official Sets Space Port Town Town Sets 

6454: Countdown Corner

July 14, 2021July 14, 2021 Master Builder
6061: Siege Tower
Castle Castle Sets Lion Knights Medium Builds Official Sets 

6061: Siege Tower

January 6, 2022January 6, 2022 Master Builder
6155: Deep Sea Predator
Aquashark Aquazone Aquazone Sets Official Sets Small Builds 

6155: Deep Sea Predator

May 10, 2022May 10, 2022 Master Builder
4741: Blacktron Super Vehicle Value 3-Pack 
Blacktron II Blacktron II Alternate Builds Blacktron II Sets Bonus/Value Pack Sets Bonus/Value Packs Large Builds Official Sets Space Super Model 

4741: Blacktron Super Vehicle Value 3-Pack 

February 19, 2026February 20, 2026 Master Builder
6499: Time Tunnelator with Time Machine
Box Plus Different Box Versions Official Sets Playscape/Play Stage Box Small Builds Time Cruisers Time Cruisers Sets 

6499: Time Tunnelator with Time Machine

March 5, 2026March 5, 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.