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

BACK OF THE BOX BUILDS

918 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

918 – Back C

April 27, 2020May 16, 2024 Master Builder
6190 – Back C
Alternate Builds Aquashark Aquazone Aquazone Alternate Builds Instructions Added Large Alt Build Large Builds 

6190 – Back C

November 21, 2023November 29, 2023 Master Builder
1789 – Back A
Alternate Builds Instructions Added Medium Alt Build Medium Builds Space Unitron Unitron Alternate Builds 

1789 – Back A

January 16, 2024January 17, 2024 Master Builder
6334 – Back E
Alternate Builds Medium Builds Town Town Alternate Builds 

6334 – Back E

June 27, 2022June 27, 2022 Master Builder
6848 – Back D
Alternate Builds Classic Space Classic Space Alternate Builds Duplicate Alternate Number Small Builds Space 

6848 – Back D

March 11, 2024March 11, 2024 Master Builder
1761 – Back C
Alternate Builds Paradisa Town Town Alternate Builds Very Small Builds 

1761 – Back C

April 10, 2023April 10, 2023 Master Builder
6818 – Back A
Alternate Builds Instructions Added Small Builds Space UFO UFO Alternate Builds Very Small Alt Build 

6818 – Back A

August 4, 2023August 6, 2023 Master Builder

NEW INSTRUCTIONS ADDED!View All

  • 42089 – Back A
    2 in 1 Alternate Builds Alternate Instructions Included Instructions Added Medium Builds Technic Technic Alternate Builds 

    42089 – Back A

  • 8064 – Inside A
    Alternate Builds Instructions Added Medium Alt Build Medium Builds Technic Technic Alternate Builds 

    8064 – Inside A

  • 6980 – Back F
    Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Large Alt Build Large Builds Space 

    6980 – Back F

  • 6980 – Back D
    Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

    6980 – Back D

  • 4558 – Inside B
    Alternate Builds Alternate Instructions Included Extra Large Alt Build Extra Large Builds Instructions Added Train Train Alternate Builds 

    4558 – Inside B

42089 – Back A42089 – Back A8064 – Inside A8064 – Inside A6980 – Back F6980 – Back F6980 – Back D6980 – Back D4558 – Inside B4558 – Inside B

NEW OFFICIAL SETS ADDED!View All

4544: Car Transport Wagon with Car
9V Medium Builds Official Sets Town Train Train Sets 

4544: Car Transport Wagon with Car

September 18, 2026September 18, 2026 Master Builder

Year Released: 1994BricklinkInstructions

6540: Pier Police
Classic Town Large Builds Official Sets Police Town Town Sets 

6540: Pier Police

September 9, 2026September 11, 2026 Master Builder

Year Released: 1991BricklinkInstructions

42089: Power Boat
2 in 1 Medium Builds Official Sets Technic Technic Sets 

42089: Power Boat

August 28, 2026August 28, 2026 Master Builder

Year Released: 2019BricklinkInstructions

NEW ALTERNATE BUILDS ADDED!View All

4544 – Back C
Alternate Builds Medium Builds Train Train Alternate Builds 

4544 – Back C

September 18, 2026September 18, 2026 Master Builder
4544 – Back B
Alternate Builds Medium Builds Train Train Alternate Builds 

4544 – Back B

September 18, 2026September 18, 2026 Master Builder
4544 – Back A
Alternate Builds Medium Builds Train Train Alternate Builds 

4544 – Back A

September 18, 2026September 18, 2026 Master Builder
6540 – Back G
Alternate Builds Classic Town Large Builds Police Town Town Alternate Builds 

6540 – Back G

September 9, 2026September 9, 2026 Master Builder
6540 – Back F
Alternate Builds Classic Town Police Small Builds Town Town Alternate Builds 

6540 – Back F

September 9, 2026September 9, 2026 Master Builder
6540 – Back E
Alternate Builds Classic Town Large Builds Police Town Town Alternate Builds 

6540 – Back E

September 9, 2026September 9, 2026 Master Builder
6540 – Back D
Alternate Builds Classic Town Police Small Builds Town Town Alternate Builds 

6540 – Back D

September 9, 2026September 9, 2026 Master Builder
6540 – Back C
Alternate Builds Classic Town Police Town Town Alternate Builds Very Small Builds 

6540 – Back C

September 9, 2026September 9, 2026 Master Builder
6540 – Back B
Alternate Builds Classic Town Medium Builds Police Town Town Alternate Builds 

6540 – Back B

September 9, 2026September 9, 2026 Master Builder
6540 – Back A
Alternate Builds Classic Town Medium Builds Police Town Town Alternate Builds 

6540 – Back A

September 9, 2026September 9, 2026 Master Builder

STAR WARSView All

7259 – Back A
Alternate Builds Episode III Medium Builds Star Wars Star Wars Alternate Builds 

7259 – Back A

March 1, 2023March 3, 2023 Master Builder

From: 7259: ARC-170 StarfighterName: TBDSubmitted by: USERInstructions:

HARRY POTTERView All

4708 – Back B
Alternate Builds Harry Potter Harry Potter Alternate Builds Instructions Added Large Alt Build Large Builds Sorcerer's Stone 

4708 – Back B

August 1, 2024August 8, 2024 Master Builder

From: 4708: Hogwarts ExpressName: Hogwarts Cargo Hauler Instructions: View PDF | Download .io File

INSTRUCTIONS ADDEDView All

7184 – Instructions 5
Alternate Builds Alternate Instructions Included Episode IV/V/VI Instructions Added Medium Alt Build Medium Builds Star Wars Star Wars Alternate Builds 

7184 – Instructions 5

6826 – Back D
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6826 – Back D

6835 – Back A
Alternate Builds Instructions Added Small Alt Build Small Builds Spyrius Spyrius Alternate Builds 

6835 – Back A

375-2 – Inside B
Alternate Builds Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

375-2 – Inside B

6483 – Back C
Alternate Builds Classic Town Instructions Added Medium Alt Build Medium Builds Police Town Town Alternate Builds 

6483 – Back C

1704 – Side L
Alternate Builds Bonus/Value Pack Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Small Alt Build Small Builds Space 

1704 – Side L

4883 – Instructions C
Alternate Builds Designer Sets Designer Sets Alternate Builds Instructions Added Small Alt Build Small Builds 

4883 – Instructions C

Book 250 – Page 28-29
Alternate Instructions Included Classic Space Classic Space Alternate Builds Idea Book Instructions Added Small Alt Build Space 

Book 250 – Page 28-29

6080 – Back A
Alternate Builds Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6080 – Back A

6054 – Back A
Alternate Builds Castle Castle Alternate Builds Forestmen Instructions Added Medium Alt Build Medium Builds Royal Knights 

6054 – Back A

6898 – Back C
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6898 – Back C

6454 – Back B
Alternate Builds Instructions Added Small Alt Build Small Builds Space Port Town Town Alternate Builds 

6454 – Back B

6546 – Back A
Alternate Builds Instructions Added Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6546 – Back A

6155 – Back D
Alternate Builds Aquashark Aquazone Aquazone Alternate Builds Instructions Added Small Alt Build Small Builds 

6155 – Back D

1694 – Back B
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

1694 – Back B

7121 – Back A
Alternate Builds Episode I Instructions Added Small Alt Build Small Builds Star Wars Star Wars Alternate Builds 

7121 – Back A

6818 – Back A
Alternate Builds Instructions Added Small Builds Space UFO UFO Alternate Builds Very Small Alt Build 

6818 – Back A

6077-2 – Inside A
Alternate Builds Castle Castle Alternate Builds Instructions Added Large Alt Build Large Builds 

6077-2 – Inside A

6018 – Back C
Alternate Builds Castle Castle Alternate Builds Instructions Added Small Alt Build Small Builds 

6018 – Back C

6086 – Inside A
Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6086 – Inside A

4592 – Back B
Alternate Builds Drome Racers Instructions Added Racers Racers Alternate Builds Small Alt Build Very Small Alt Build Very Small Builds 

4592 – Back B

6067 – Inside A
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Medium Alt Build Medium Builds 

6067 – Inside A

2153 – Back A
Alternate Builds Instructions Added Large Alt Build Large Builds Robo Force Robo Force Alternate Builds Space 

2153 – Back A

535 – Side L
Alternate Builds Basic Instructions Added LEGOLAND Alternate Builds Medium Alt Build Medium Builds Universal Building Set Universal Building Set Alternate Builds 

535 – Side L

6367 – Back C
Alternate Builds Cargo Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6367 – Back C

6580 – Back B
Alternate Builds Extreme Team Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6580 – Back B

6590 – Back E
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6590 – Back E

1858 – Back A
Alternate Builds Exploriens Exploriens Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

1858 – Back A

6085 – Back A
Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6085 – Back A

6956 – Back B
Alternate Builds Instructions Added Large Alt Build Large Builds M:Tron M:Tron Alternate Builds Space 

6956 – Back B

6890 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6890 – Back B

Book 200 – Page 46-47
Castle Castle Alternate Builds Idea Book Instructions Added Small Alt Build Small Builds 

Book 200 – Page 46-47

Rtron
Concepts and Prototypes Instructions Added Medium Alt Build Medium Builds R-TRON R:Tron Space 

Rtron

4709 – Back B
Alternate Builds Extra Large Builds Harry Potter Harry Potter Alternate Builds Instructions Added Sorcerer's Stone 

4709 – Back B

1787 – Back C
Alternate Builds Instructions Added Medium Alt Build Medium Builds Space Unitron Unitron Alternate Builds 

1787 – Back C

6039 – Back B
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Small Alt Build Small Builds 

6039 – Back B

6931 – Inside B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6931 – Inside B

6561 – Back A
Alternate Builds Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6561 – Back A

6367 – Back B
Alternate Builds Cargo Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6367 – Back B

6390 – Back C
Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Back C

920 – Back F
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

920 – Back F

6881 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6881 – Back B

6211 – Back B
Alternate Builds Episode IV/V/VI Instructions Added Large Alt Build Large Builds Star Wars Star Wars Alternate Builds 

6211 – Back B

7161 – Instructions 1
Alternate Builds Instructions Added Medium Alt Build Medium Builds Star Wars Star Wars Alternate Builds 

7161 – Instructions 1

1694 – Back A
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

1694 – Back A

6074 – Back A
Alternate Builds Castle Castle Alternate Builds Instructions Added Large Alt Build Large Builds 

6074 – Back A

6235 – Back B
Alternate Builds Instructions Added Pirates Pirates Alternate Builds Pirates I Very Small Alt Build Very Small Builds 

6235 – Back B

Book 7777 – Page 66-67
Idea Book Instructions Added Large Alt Build Large Builds Town Train 

Book 7777 – Page 66-67

6884 – Back D
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6884 – Back D

6258 – Back A
Alternate Builds Instructions Added Pirates Pirates Alternate Builds Pirates I Small Alt Build Small Builds 

6258 – Back A

6876 – Back B
Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6876 – Back B

6367 – Back A
Alternate Builds Cargo Classic Town Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6367 – Back A

6665 – Back D
Alternate Builds Classic Town Instructions Added Recreation Small Alt Build Small Builds Town Town Alternate Builds 

6665 – Back D

6048 – Back A
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Medium Alt Build Medium Builds 

6048 – Back A

6562 – Back D
Alternate Builds Classic Town Gas Station Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6562 – Back D

6814 – Back C
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6814 – Back C

6827 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6827 – Back A

6875 – Back A
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6875 – Back A

6872 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6872 – Back C

6027 – Back C
Alternate Builds Castle Castle Alternate Builds Fright Knights Instructions Added Small Alt Build Small Builds 

6027 – Back C

1793 – Back C
Alternate Builds Instructions Added Large Alt Build Large Builds Space Unitron Unitron Alternate Builds 

1793 – Back C

8675 – Back B
Alternate Builds Instructions Added Racers Racers Alternate Builds Radio Control Small Alt Build Small Builds 

8675 – Back B

6077-2 – Back B
Alternate Builds Castle Castle Alternate Builds Instructions Added Large Alt Build Large Builds 

6077-2 – Back B

6270 – Back A
Alternate Builds Instructions Added Medium Alt Build Medium Builds Pirates Pirates Alternate Builds Pirates I 

6270 – Back A

1096 – Back A
Alternate Builds Classic Town Instructions Added Race Town Town Alternate Builds Very Small Alt Build Very Small Builds 

1096 – Back A

6970 – Back H
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6970 – Back H

6100 – Back B
Alternate Builds Aquashark Aquazone Aquazone Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6100 – Back B

6076 – Back D
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Medium Alt Build Medium Builds 

6076 – Back D

4707 – Back A
Alternate Builds Harry Potter Harry Potter Alternate Builds Instructions Added Medium Builds Sorcerer's Stone 

4707 – Back A

4883 – Instructions F
Alternate Builds Designer Sets Designer Sets Alternate Builds Instructions Added Small Alt Build Small Builds 

4883 – Instructions F

6513 – Back A
Alternate Builds Classic Town Harbor Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6513 – Back A

7140 – Instructions 4
Alternate Builds Instructions Added Medium Alt Build Medium Builds Star Wars Star Wars Alternate Builds 

7140 – Instructions 4

6939 – Back B
Alternate Builds Instructions Added Medium Alt Build Medium Builds Spyrius Spyrius Alternate Builds 

6939 – Back B

6043 – Back D
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Medium Alt Build Medium Builds 

6043 – Back D

6258 – Back B
Alternate Builds Instructions Added Pirates Pirates Alternate Builds Pirates I Small Alt Build Small Builds 

6258 – Back B

6593 – Back E
Alternate Builds Classic Town Fire Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6593 – Back E

6780 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6780 – Back C

4883 – Instructions B
Alternate Builds Designer Sets Designer Sets Alternate Builds Instructions Added Small Alt Build Small Builds 

4883 – Instructions B

6061 – Inside A
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Medium Alt Build Medium Builds 

6061 – Inside A

6381 – Back E
Alternate Builds Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6381 – Back E

6668 – Back B
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6668 – Back B

6949 – Back D
ABCs Alternate Builds Instructions Added Large Alt Build Large Builds Space Spyrius Spyrius Alternate Builds 

6949 – Back D

6541 – Back D
Alternate Builds Classic Town Harbor Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6541 – Back D

6780 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6780 – Back B

6951 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Large Alt Build Large Builds Space 

6951 – Back A

6048 – Back B
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Medium Alt Build Medium Builds 

6048 – Back B

6813 – Back C
Alternate Builds Instructions Added Space Space Police II Space Police II Alternate Builds Very Small Alt Build Very Small Builds 

6813 – Back C

6755 – Back A
Alternate Builds Cowboys Instructions Added Medium Alt Build Medium Builds Western Western Alternate Builds 

6755 – Back A

4708 – Instructions A
Alternate Builds Harry Potter Harry Potter Alternate Builds Instructions Added Small Alt Build Small Builds Sorcerer's Stone 

4708 – Instructions A

6890 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6890 – Back A

1968 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

1968 – Back C

6273 – Back A
Alternate Builds Instructions Added Large Alt Build Large Builds Pirates Pirates Alternate Builds Pirates I 

6273 – Back A

6060 – Instructions A
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Medium Alt Build Very Small Alt Build Very Small Builds 

6060 – Instructions A

Book 6000 – Page 42-43
Classic Town Idea Book Instructions Added Medium Alt Build Town 

Book 6000 – Page 42-43

6980 – Back D
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6980 – Back D

6641 – Back B
Alternate Builds Classic Town Instructions Added Off-Road Small Alt Build Small Builds Town Town Alternate Builds 

6641 – Back B

6030 – Back A
Alternate Builds Black Falcons Castle Castle Alternate Builds Instructions Added Small Alt Build Small Builds 

6030 – Back A

1731 – Back B
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

1731 – Back B

6071 – Back C
Alternate Builds Castle Castle Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6071 – Back C

6716 – Back A
Alternate Builds Cowboys Instructions Added Very Small Alt Build Very Small Builds Western Western Alternate Builds 

6716 – Back A

EXPLORE MORE OFFICIAL SETS

1954 (1714, Kabaya: Space 1): Surveillance Scooter
Jørn Thomsen Official Sets Space Spyrius Spyrius Sets Very Small Builds 

1954 (1714, Kabaya: Space 1): Surveillance Scooter

January 26, 2022February 25, 2025 Master Builder

Year Released: 1995Designer: Jørn ThomsenBricklinkInstructions *Kabaya: Space 1 is listed on Bricklink as 3013: Space Jet

1795 – Side R
Bonus/Value Packs Imperial Guards Official Sets Pirates Pirates Alternate Builds Pirates I Small Builds 

1795 – Side R

March 30, 2026March 30, 2026 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
6534: Beach Bandit
Classic Town Official Sets Recreation Town Town Sets Very Small Builds 

6534: Beach Bandit

July 8, 2022July 8, 2022 Master Builder
6260: Shipwreck Island
Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Small Builds 

6260: Shipwreck Island

April 9, 2020July 29, 2023 Master Builder
6356: Med-Star Rescue Plane
Classic Town Hospital Medium Builds Official Sets Town Town Sets 

6356: Med-Star Rescue Plane

March 16, 2022March 16, 2022 Master Builder
375: Deluxe Basic Set
Box Marketing Blurb Large Builds Official Sets Samsonite Samsonite Sets 

375: Deluxe Basic Set

September 11, 2023April 3, 2024 Master Builder
4733: The Dueling Club
Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets 

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder
6755: Sheriff’s Lock-Up
Cowboys Medium Builds Official Sets Western Western Sets 

6755: Sheriff’s Lock-Up

July 3, 2024February 18, 2025 Master Builder
6901-2: Space Plane
Duplicate Set Number Official Sets UFO UFO Sets Very Small Builds 

6901-2: Space Plane

December 16, 2025December 16, 2025 Master Builder
6928: Uranium Search Vehicle
Classic Space Classic Space Sets Medium Builds Official Sets Space 

6928: Uranium Search Vehicle

January 12, 2021October 21, 2024 Master Builder
8002: Destroyer Droid
Episode I Extra Large Builds Official Sets Star Wars Star Wars Sets Star Wars Technic Technic 

8002: Destroyer Droid

August 17, 2023September 1, 2023 Master Builder
6955: Space Lock-Up Isolation Base
Box Marketing Blurb Large Builds Official Sets Space Space Police I Space Police I Sets 

6955: Space Lock-Up Isolation Base

February 3, 2021April 3, 2024 Master Builder
1657: Bird
Basic Set Duplo Duplo Sets Official Sets Very Small Builds 

1657: Bird

December 28, 2021December 29, 2021 Master Builder
6524: Blizzard Blazer
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6524: Blizzard Blazer

June 28, 2022June 28, 2022 Master Builder
6852: Sonar Security
Jørn Thomsen Official Sets Small Builds Space Space Police II Space Police II Sets 

6852: Sonar Security

September 22, 2020July 29, 2023 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.