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

6907 – Back A
Alternate Builds Insectoids Insectoids Alternate Builds Small Builds Space 

6907 – Back A

October 3, 2024October 3, 2024 Master Builder
6082 – Back C
Alternate Builds Castle Castle Alternate Builds Dragon Knights Large Builds 

6082 – Back C

January 13, 2022January 13, 2022 Master Builder
6712 – Back B
Alternate Builds Cowboys Instructions Added Very Small Alt Build Very Small Builds Western Western Alternate Builds 

6712 – Back B

November 20, 2023November 29, 2023 Master Builder
6926 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Medium Builds Space 

6926 – Back C

October 12, 2021October 12, 2021 Master Builder
6876 – Back B
Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6876 – Back B

November 16, 2019January 10, 2022 Master Builder
6932 – Back D
Alternate Builds Futuron Futuron Alternate Builds Medium Builds Space 

6932 – Back D

September 24, 2019January 10, 2022 Master Builder
1876 – Back A
Alternate Builds Bonus/Value Pack Alternate Builds Classic Town Small Builds Town Town Alternate Builds Traffic 

1876 – Back A

October 11, 2021September 7, 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

7151 – Back B
Alternate Builds Episode I Medium Builds Star Wars Star Wars Alternate Builds 

7151 – Back B

September 1, 2023September 1, 2023 Master Builder

From: 7151: Sith InfiltratorName: TBDSubmitted by: USERInstructions

HARRY POTTERView All

4702 – Back B
Alternate Builds Harry Potter Harry Potter Alternate Builds Instructions Added Small Alt Build Small Builds Sorcerer's Stone 

4702 – Back B

August 8, 2024August 8, 2024 Master Builder

From: 4702: The Final ChallengeName: Telescope Instructions: View PDF | Download .io File

INSTRUCTIONS ADDEDView All

6346 – Back D
Airport Alternate Builds Classic Town Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6346 – Back D

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

6956 – Back B

6276 – Back B
Alternate Builds Extra Large Alt Build Extra Large Builds Imperial Soldiers Instructions Added Pirates Pirates Alternate Builds Pirates I 

6276 – Back B

6040 – Back C
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Small Alt Build Small Builds 

6040 – Back C

6056 – Back D
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Small Alt Build Small Builds 

6056 – Back D

6190 – Back D
Alternate Builds Aquashark Aquazone Aquazone Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6190 – Back D

Book 6000 – Page 8-9
Classic Town Idea Book Instructions Added Town 

Book 6000 – Page 8-9

6981 – Back C
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Large Alt Build Large Builds 

6981 – Back C

6667 – Back C
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6667 – Back C

6348 – Back E
Alternate Builds Classic Town Instructions Added Police Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6348 – Back E

6712 – Back A
Alternate Builds Cowboys Instructions Added Very Small Alt Build Very Small Builds Western Western Alternate Builds 

6712 – Back A

6799 – Back A
Alternate Builds Cowboys Instructions Added Very Small Alt Build Very Small Builds Western Western Alternate Builds 

6799 – Back A

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

4708 – Back C

720 – Side R
Alternate Builds Basic Instructions Added LEGOLAND Alternate Builds Medium Alt Build Medium Builds Universal Building Set Universal Building Set Alternate Builds 

720 – Side R

720 – Back B
Alternate Builds Basic Instructions Added LEGOLAND Alternate Builds Medium Alt Build Medium Builds Universal Building Set Universal Building Set Alternate Builds 

720 – Back B

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

6831 – Back B
Alternate Builds Instructions Added Space Space Police I Space Police I Alternate Builds Very Small Alt Build Very Small Builds 

6831 – Back B

6940 – Inside B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6940 – Inside B

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

6546 – Back A

6861 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6861 – 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

6262 – Back B
Alternate Builds Instructions Added Islanders Pirates Pirates Alternate Builds Pirates I Small Alt Build Small Builds 

6262 – Back B

6511 – Back C
Alternate Builds Classic Town Fire Instructions Added Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6511 – Back C

6352 – Back A
Alternate Builds Classic Town Construction Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6352 – Back A

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

6813 – Back A

4705 – Back B
Alternate Builds Harry Potter Harry Potter Alternate Builds Instructions Added Medium Builds Sorcerer's Stone 

4705 – Back B

6808 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6808 – Back A

BrickJournal Issue 6 Volume 2 Page 40 – Proto 5
Concepts and Prototypes Instructions Added M:Tron M:Tron Alternate Builds Small Alt Build Small Builds Space 

BrickJournal Issue 6 Volume 2 Page 40 – Proto 5

6825 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Builds 

6825 – Back C

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

6716 – Back A

6940 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6940 – Back A

6012 – Back A
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Very Small Alt Build Very Small Builds 

6012 – Back A

6895 – Back B
Alternate Builds Instructions Added Medium Alt Build Medium Builds Space Space Police I Space Police I Alternate Builds 

6895 – Back B

6056 – Back B
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Small Alt Build Small Builds 

6056 – Back B

6135 – Back C
Alternate Builds Aquashark Aquazone Aquazone Alternate Builds Instructions Added Small Alt Build Small Builds 

6135 – Back C

6973 – Back C
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Large Alt Build Large Builds 

6973 – Back C

6381 – Back B
Alternate Builds Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6381 – Back B

6687 – Back E
Airport Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6687 – Back E

4563 – Back A
Alternate Builds Instructions Added Large Alt Build Large Builds Train Train Alternate Builds 

4563 – Back A

6834 – Back B
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6834 – Back B

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

6755 – Back A

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

8064 – Inside A

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

6826 – Back B

720 – Back A
Alternate Builds Basic Instructions Added LEGOLAND Alternate Builds Medium Alt Build Medium Builds Universal Building Set Universal Building Set Alternate Builds 

720 – Back A

6829 – Back C
Alternate Builds Instructions Added Small Builds Space UFO UFO Alternate Builds 

6829 – Back C

6581 – Back C
Alternate Builds Classic Town Construction Instructions Added Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6581 – Back C

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

1858 – Back B

Book 7777 – Page 42-43
Idea Book Instructions Added Large Alt Build Large Builds Town Train 

Book 7777 – Page 42-43

6851 – Back A
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6851 – Back A

6481 – Back C
Alternate Builds Classic Town Construction Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6481 – Back C

7701 – Inside A
Alternate Builds Exo-Force Exo-Force Alternate Builds Instructions Added Medium Builds 

7701 – Inside A

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

6071 – Back A

Book 6000 – Page 46-47
Classic Town Idea Book Instructions Added Small Alt Build Town 

Book 6000 – Page 46-47

1843 – Side R
Bonus/Value Pack Alternate Builds Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Alternate Builds 

1843 – Side R

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

6562 – Back A

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

6483 – Back C

6985 – Back D
Alternate Builds Classic Space Classic Space Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6985 – Back D

6850 – Back A
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6850 – Back A

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

6755 – Back C

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

6546 – Back B

Book 260 – Page 46-47
Blacktron Blacktron Alternate Builds Idea Book Instructions Added Space Space Police I Space Police I Alternate Builds 

Book 260 – Page 46-47

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

6884 – Back D

6062 – Back A
ABCs Alternate Builds Black Falcons Castle Castle Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6062 – Back A

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

6381 – Back D

1616 – Back B
Alternate Builds Bonus/Value Pack Alternate Builds Futuron Futuron Alternate Builds Instructions Added Small Builds Space 

1616 – Back B

6706 – Back A
Alternate Builds Cowboys Instructions Added Very Small Alt Build Very Small Builds Western Western Alternate Builds 

6706 – Back A

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

6827 – Back C

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

7121 – Back A

6664 – Back D
Alternate Builds Classic Town Instructions Added Police Small Alt Build Small Builds Town Town Alternate Builds 

6664 – Back D

7250 – Back B
Alternate Builds Episode III Instructions Added Small Alt Build Small Builds Star Wars Star Wars Alternate Builds 

7250 – Back B

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

6872 – Back C

6810 – Back A
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6810 – Back A

6990 – Back B
Alternate Builds Extra Large Alt Build Extra Large Builds Futuron Futuron Alternate Builds Instructions Added Space 

6990 – Back B

6823 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6823 – Back C

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

6593 – Back C

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

6541 – Back B

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

2153 – Back A

Book 250 – Page 42-43
Alternate Instructions Included Castle Castle Alternate Builds Idea Book Instructions Added 

Book 250 – Page 42-43

6803 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6803 – Back B

6440 – Back D
Airport Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6440 – Back D

6841 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6841 – Back A

Book 6000 – Page 74-75
Castle Castle Alternate Builds Classic Space Classic Space Alternate Builds Idea Book Instructions Added Large Alt Build Space 

Book 6000 – Page 74-75

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

6270 – Back D

2153 – Back B
Alternate Builds Instructions Added Medium Alt Build Medium Builds Robo Force Robo Force Alternate Builds Space 

2153 – Back B

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

6076 – Back A

6666 – Back C
Alternate Builds Classic Town Hospital Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6666 – Back C

720 – Inside E
Alternate Builds Basic Instructions Added LEGOLAND Alternate Builds Medium Alt Build Medium Builds Universal Building Set Universal Building Set Alternate Builds 

720 – Inside E

Book 6000 – Page 68-69
Classic Space Classic Space Alternate Builds Idea Book Instructions Added Large Alt Build Space 

Book 6000 – Page 68-69

6683 – Back C
Alternate Builds Classic Town Food and Drink Instructions Added Small Builds Town Town Alternate Builds 

6683 – Back C

4704 – Back B
Alternate Builds Harry Potter Harry Potter Alternate Builds Instructions Added Medium Builds Sorcerer's Stone 

4704 – Back B

6036 – Back B
Castle Castle Alternate Builds Instructions Added Royal Knights Small Builds 

6036 – Back B

6685 – Catalog 4
Alternate Builds Classic Town Fire Instructions Added Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6685 – Catalog 4

6940 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6940 – Back B

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

6780 – Back E

6973 – Back A
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Large Alt Build Large Builds 

6973 – Back A

6397 – Back A
Alternate Builds Classic Town Gas Station Instructions Added Large Alt Build Large Builds Town Town Alternate Builds 

6397 – Back A

6887 – Back D
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6887 – Back D

6066 – Back B
Alternate Builds Castle Castle Alternate Builds Forestmen Instructions Added Medium Alt Build Medium Builds 

6066 – Back B

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

6561 – Back A

6646 – Back A
Alternate Builds Classic Town Instructions Added Race Small Alt Build Small Builds Town Town Alternate Builds 

6646 – Back A

EXPLORE MORE OFFICIAL SETS

4789: AT Aquatic Mech
Alpha Team Alpha Team Sets Medium Builds Mission Deep Sea Official Sets 

4789: AT Aquatic Mech

February 12, 2024February 21, 2024 Master Builder

Year Released: 2002BricklinkInstructions

8812: Aero Hawk II
Medium Builds Official Sets Technic Technic Sets 

8812: Aero Hawk II

January 22, 2026January 22, 2026 Master Builder
6693: Recycle Truck
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6693: Recycle Truck

May 10, 2022May 10, 2022 Master Builder
6604: Formula-1 Racer
Official Sets Race Town Town Sets Very Small Builds 

6604: Formula-1 Racer

November 25, 2020November 25, 2020 Master Builder
8927: Toa Terrain Crawler
BIONICLE BIONICLE Sets Extra Large Builds Official Sets Playsets 

8927: Toa Terrain Crawler

March 3, 2026March 3, 2026 Master Builder
6245: Harbor Sentry
Imperial Soldiers Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Very Small Builds 

6245: Harbor Sentry

July 13, 2021July 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
6160: Sea Scorpion
Aquazone Aquazone Sets Large Builds Official Sets Stingrays 

6160: Sea Scorpion

October 29, 2019April 4, 2020 Master Builder
6473: Res-Q Hovercraft
Large Builds Official Sets Res-Q Town Town Sets 

6473: Res-Q Hovercraft

January 20, 2022January 20, 2022 Master Builder
1371: Spinosaurus Attack Studio
Jurassic Park III Medium Builds Official Sets Studio Alternate Builds Studio Sets Studios 

1371: Spinosaurus Attack Studio

January 6, 2022June 4, 2024 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
6551: Checkered Flag 500
Medium Builds Official Sets Town Town Sets 

6551: Checkered Flag 500

November 21, 2023November 21, 2023 Master Builder
6244: Armada Sentry
Imperial Armada Official Sets Pirates Pirates Sets Small Builds 

6244: Armada Sentry

November 16, 2019April 4, 2020 Master Builder
6593: Blaze Battler
Classic Town Fire Medium Builds Official Sets Town Town Sets 

6593: Blaze Battler

November 19, 2020November 19, 2020 Master Builder
4552: Cargo Crane
9V Large Builds Official Sets Town Train Train Sets 

4552: Cargo Crane

July 22, 2026July 22, 2026 Master Builder
6887: Allied Avenger
ABCs Blacktron II Blacktron II Sets Official Sets Small Builds 

6887: Allied Avenger

October 5, 2019July 31, 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.