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Back of the Box Builds

Back of the Box Builds

LEGO Alternate Builds!

  • SETS
    • Adventurers
    • Aquazone
    • Belville
    • Building Set with People
    • Castle
    • Duplo
    • Fabuland
    • Harry Potter
    • Holiday and Event
    • LEGOLAND
    • Model Team
    • Pirates
    • Space
    • Star Wars
    • Technic
    • Town
    • Universal Building Set
    • Western
    • More Sets
    • Misc
  • USEFUL LINKS
    • Submit Instructions!
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    • Minifigs
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    • Extra Large Builds
    • How BOTBB was Built
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Blacktron

Blacktron Blacktron Alternate Builds Classic Space Classic Space Alternate Builds Comic Book Jim Spaceborn Space 

Robus

March 14, 2025April 10, 2025 Master Builder 2969 Views

MiscName: RobusSubmitted by: USERInstructions: Jim Spaceborn: The Unknown Galaxy

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Blacktron Blacktron Alternate Builds Captain Indigo Concepts and Prototypes Instructions Added LEGO Builders Club LEGO Magazine Space Very Small Alt Build Very Small Builds 

T42

March 9, 2025March 22, 2025 Master Builder 5163 Views

MiscBuild: T42 Instructions: View PDF | Download .io File Also Pictured: Blacktron Time Machine Bricks n Pieces: Spring 1988 – Page 4UK LEGO

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Blacktron Blacktron Alternate Builds Captain Indigo Concepts and Prototypes Instructions Added LEGO Builders Club LEGO Magazine Small Alt Build Small Builds Space 

Blacktron Time Machine

March 1, 2025March 22, 2025 Master Builder 5067 Views

MiscBuild: Blacktron Time Machine Instructions: View PDF | Download .io File Also pictured: T42 Bricks n Pieces: Spring 1988 – Page 4UK LEGO

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ABCs Blacktron Classic Space Commercials Space 

1988 Classic Space and Blacktron with Zack Commercial

August 16, 2023August 16, 2023 Master Builder 2759 Views

MiscFeatured: 6780: XT-Starship, 6954: Renegade, 6972: Polaris I Space Lab Build 1: Blacktron CadillacSubmitted By: USERInstructions: Build 2: Cosmic FleetSubmitted By: USERInstructions: Build 3: UFOSubmitted

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ABCs Blacktron Blacktron Alternate Builds Blacktron II Blacktron II Alternate Builds Concepts and Prototypes Space 

Blacktron Concept

February 23, 2023February 11, 2025 Master Builder 4411 Views

MiscTheme: Blacktron BrickJournal: Issue 6 Volume 2 – Page 39TwoMorrows PublishingPhoto Credit: Niels Milan Pedersen’s personal LEGO archives Build 1: TBDSubmitted

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Blacktron Blacktron Alternate Builds Idea Book Instructions Added Space Space Police I Space Police I Alternate Builds 

Book 260 – Page 46-47

February 5, 2023February 13, 2023 Master Builder 4131 Views

From: Idea Book 260Year Released: 1990 Build: Space Police Tactical Lock-up (Space Police) (Also on Page 42-43) Instructions: View PDF Build: Surveillance Tower

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Blacktron Alternate Builds Extra Large Builds Idea Book Instructions Added M:Tron Alternate Builds Small Alt Build Space Space Police I Alternate Builds 

Book 260 – Page 42-43

February 5, 2023February 14, 2023 Master Builder 4972 Views

From: Idea Book 260Year Released: 1990 Build: Space Police Tactical Lock-up (Space Police) (Also on Page 46-47) Instructions: View PDF Build: Surveillance Tower (Space

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ABCs Alternate Builds Blacktron Blacktron Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6987 – Back B

March 29, 2022August 15, 2023 Master Builder 7199 Views

From: 6987: Message Intercept BaseName: Message Transporting Vessel Instructions: View PDF | Download .io File *Alternate Build Connection: 928 – Back A, 6932:

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

6987 – Back D

February 24, 2022March 17, 2022 Master Builder 4367 Views

From: 6987: Message Intercept BaseName: Message Debugging Unit Instructions: View PDF | Download .io File

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ABCs Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6941 – Inside A

February 10, 2022July 31, 2023 Master Builder 4176 Views

From: 6941: BattraxName: B-Rex Instructions: View PDF | Download .io File *Alternate Build Connection: 6987 – Back C

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

6987 – Back A

January 31, 2022February 1, 2022 Master Builder 4497 Views

From: 6987: Message Intercept BaseName: Message Processing Hub Instructions: View PDF | Download .io File

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Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6894 – Back B

January 13, 2022January 14, 2022 Master Builder 3169 Views

From: 6894: InvaderName: Ghost Reconship Instructions: View PDF | Download .io File

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Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6894 – Back A

January 10, 2022January 11, 2022 Master Builder 4901 Views

From: 6894: InvaderName: Blacktron Dragonfly Instructions: View PDF | Download .io File

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Blacktron Blacktron Alternate Builds Futuron Futuron Alternate Builds Idea Book Instructions Added Large Alt Build Large Builds M:Tron M:Tron Alternate Builds Space 

Book 260 – Page 44-45

November 1, 2021March 14, 2025 Master Builder 5352 Views

From: Idea Book 260Year Released: 1990 Build 1: Subsolar Scout (M:Tron) (Also on Page 42-43) Instructions: View PDF Build 2: M:Hopper

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Blacktron Blacktron Sets Bonus/Value Packs Castle Castle Sets Classic Town Forestmen Official Sets Small Builds Space Town Traffic 

1675: Legoland Triple Pack

October 12, 2021October 12, 2021 Master Builder 5448 Views

Year Released: 1990BricklinkContains Sets: 1875: Meteor Monitor, 1876: Soil Scooper, and 1877: Crusader’s Cart 

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Alternate Builds Blacktron Blacktron Alternate Builds Bonus/Value Pack Alternate Builds Instructions Added Small Alt Build Small Builds Space 

1875 – Back B

October 11, 2021September 7, 2023 Master Builder 2342 Views

From: 1675: Legoland Triple PackName: BT Walker Instructions: View PDF | Download .io File

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Alternate Builds Blacktron Blacktron Alternate Builds Bonus/Value Pack Alternate Builds Instructions Added Small Alt Build Small Builds Space 

1875 – Back A

October 11, 2021September 7, 2023 Master Builder 2676 Views

From: 1675: Legoland Triple PackName: BT Foldwing Instructions: View PDF | Download .io File

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Blacktron Blacktron Sets Bonus/Value Pack Sets LL Link Official Sets Very Small Builds 

1875: Meteor Monitor

July 14, 2021October 16, 2024 Master Builder 4497 Views

Year Released: 1990BricklinkInstructions BOX NOTE – This set was available in 1675: Legoland Triple Pack. The back of this box was glued

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

6954 – Inside B

September 7, 2020March 14, 2025 Master Builder 4088 Views

From: 6954: RenegadeName: B:Mech and Mech Suit Support Vehicle Instructions: View PDF | Download .io File

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

6954 – Inside A

September 7, 2020March 14, 2025 Master Builder 3643 Views

From: 6954: RenegadeName: Rebel Instructions: View PDF | Download .io File

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ABCs Bjarne Tveskov Blacktron Blacktron Sets Large Builds Official Sets Space 

6954: Renegade

September 7, 2020October 16, 2024 Master Builder 7354 Views

Year Released: 1987Designer: Bjarne TveskovBricklinkInstructions *Alternate Build Connection: 1988 Classic Space and Blacktron with Zack Commercial

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Blacktron Blacktron Sets Medium Builds Official Sets 

6894: Invader

November 20, 2019November 20, 2019 Master Builder 5939 Views

Year Released: 1987Bricklink

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ABCs Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6876 – Back C

November 16, 2019July 31, 2023 Master Builder 3497 Views

From: 6876: AlienatorName: Scythe Instructions: View PDF | Download .io File *Alternate Build Connection: 6878 – Back A

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Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6876 – Back B

November 16, 2019January 10, 2022 Master Builder 3220 Views

From: 6876: AlienatorName: BlackHawk Instructions: View PDF | Download .io File

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Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6876 – Back A

November 16, 2019June 5, 2023 Master Builder 3662 Views

From: 6876: AlienatorName: Talon Instructions: View PDF | Download .io File

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ABCs Bjarne Tveskov Blacktron Blacktron Sets Official Sets Small Builds Space 

6876: Alienator

November 16, 2019October 16, 2024 Master Builder 6549 Views

Year Released: 1988Designer: Bjarne TveskovBricklinkInstructions *Alternate Build Connection: 6882: Walking Astro Grappler, 6878: Sub Orbital Guardian

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ABCs Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Large Alt Build Large Builds Space 

6987 – Back C

September 16, 2019April 17, 2024 Master Builder 5587 Views

From: 6987: Message Intercept BaseName: The Alienator Overlord Instructions: View PDF  | Download .io File Improved Instructions: View PDF *Alternate Build

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

6941 – Inside B

September 15, 2019August 1, 2023 Master Builder 3069 Views

From: 6941: BattraxName: Battmobile Instructions: PDF (Photo Sequence)

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Blacktron Blacktron Sets Large Builds Official Sets 

6941: Battrax

September 13, 2019September 28, 2019 Master Builder 6861 Views

Year Released: 1987Bricklink

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Blacktron Blacktron Sets Daniel August Krentz Extra Large Builds Official Sets Space 

6987: Message Intercept Base

September 12, 2019August 4, 2023 Master Builder 9150 Views

Year Released: 1988Designer: Daniel August KrentzBricklinkInstructions

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EXPLORE MORE OFFICIAL SETS

6399: Airport Shuttle
Airport Classic Town Different Box Versions Extra Large Builds Official Sets Town Town Sets 

6399: Airport Shuttle

February 24, 2023March 17, 2024 Master Builder

Year Released: 1990BricklinkInstructions BOX NOTE – This set has a different layout of alternates on the back of the North

6561: Hot Rod Club
Medium Builds Official Sets Town Town Sets 

6561: Hot Rod Club

November 10, 2019November 10, 2019 Master Builder
6454: Countdown Corner
Medium Builds Official Sets Space Port Town Town Sets 

6454: Countdown Corner

July 14, 2021July 14, 2021 Master Builder
6670: Rescue Rig
Classic Town Official Sets Small Builds Town Town Sets Wrecker 

6670: Rescue Rig

November 19, 2020November 19, 2020 Master Builder
7133: Bounty Hunter Pursuit
Episode II Large Builds Official Sets Star Wars Star Wars Sets 

7133: Bounty Hunter Pursuit

July 14, 2021July 14, 2021 Master Builder
7250: Clone Scout Walker
Episode III Medium Builds Official Sets Star Wars Star Wars Sets 

7250: Clone Scout Walker

February 17, 2025February 17, 2025 Master Builder
3442: Legoland California Truck Limited Edition
Classic Town Official Sets Small Builds Town Town Sets Traffic 

3442: Legoland California Truck Limited Edition

October 13, 2021October 13, 2021 Master Builder
4591: Star Strike
Drome Racers Official Sets Racers Very Small Builds 

4591: Star Strike

February 21, 2025February 21, 2025 Master Builder
6900: Cyber Saucer
ABCs Large Builds Official Sets Space UFO UFO Sets 

6900: Cyber Saucer

October 2, 2024March 22, 2025 Master Builder
735: Basic Building Set
Basic Extra Large Builds Official Sets Universal Building Set 

735: Basic Building Set

September 15, 2022September 15, 2022 Master Builder
6981: Aerial Intruder
ABCs Blacktron II Blacktron II Sets Jørn Thomsen Large Builds Official Sets Space 

6981: Aerial Intruder

September 22, 2019August 15, 2023 Master Builder
6950: Mobile Rocket Transport
Classic Space Classic Space Sets Medium Builds Niels Milan Pedersen Official Sets Space 

6950: Mobile Rocket Transport

January 12, 2021July 29, 2023 Master Builder
6110: Solo Sub
Aquazone Aquazone Sets Hydronauts Official Sets Small Builds 

6110: Solo Sub

February 13, 2025February 13, 2025 Master Builder
6274: Caribbean Clipper
Box Story Imperial Soldiers Large Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets 

6274: Caribbean Clipper

February 8, 2022February 21, 2025 Master Builder
Kabaya: Alpha Team 1
Alpha Team Alpha Team Sets Mission Deep Sea Official Sets Very Small Builds 

Kabaya: Alpha Team 1

September 9, 2024September 9, 2024 Master Builder
6055: Prisoner Convoy
Castle Castle Sets Forestmen Lion Knights Official Sets Small Builds 

6055: Prisoner Convoy

May 20, 2021October 1, 2024 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
  • Belville
  • Building Set with People
  • Castle
  • Duplo
  • Fabuland
  • Harry Potter
  • Holiday and Event
  • LEGOLAND
  • Model Team
  • Pirates
  • Space
  • Star Wars
  • Technic
  • 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.

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