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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

6871 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Small Builds 

6871 – Back C

September 27, 2019September 27, 2019 Master Builder
6375 – Back C
Alternate Builds Cargo Classic Town Small Builds Town Town Alternate Builds 

6375 – Back C

November 20, 2020November 20, 2020 Master Builder
6369 – Back D
Alternate Builds Classic Town Medium Builds Town Town Alternate Builds Traffic 

6369 – Back D

December 1, 2023December 2, 2023 Master Builder
4883 – Instructions D
Alternate Builds Designer Sets Designer Sets Alternate Builds Instructions Added Small Alt Build Small Builds 

4883 – Instructions D

August 2, 2021August 28, 2024 Master Builder
6081 – Back B
Alternate Builds Castle Castle Alternate Builds Crusaders Extra Large Builds 

6081 – Back B

June 30, 2022June 30, 2022 Master Builder
6986 – Back B
Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space Space Police I Space Police I Alternate Builds 

6986 – Back B

July 6, 2023July 11, 2023 Master Builder
6930 – Back D
Alternate Builds Classic Space Classic Space Alternate Builds Medium Builds Space 

6930 – Back D

November 18, 2020September 11, 2023 Master Builder

NEW INSTRUCTIONS ADDED!View All

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

    Book 7777 – Page 66-67

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

    4563 – Back A

  • 6900 – Back B
    Alternate Builds Instructions Added Medium Alt Build Medium Builds Space UFO UFO Alternate Builds 

    6900 – Back B

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

    6348 – Back E

  • 6348 – Back D
    Alternate Builds Classic Town Instructions Added Medium Alt Build Medium Builds Police Town Town Alternate Builds 

    6348 – Back D

Book 7777 – Page 66-67Book 7777 – Page 66-674563 – Back A4563 – Back A6900 – Back B6900 – Back B6348 – Back E6348 – Back E6348 – Back D6348 – Back D

NEW OFFICIAL SETS ADDED!View All

1656: Evacuation Team
Classic Town Fire Large Builds Official Sets Town Town Sets 

1656: Evacuation Team

July 22, 2026July 22, 2026 Master Builder

Year Released: 1991BricklinkInstructions

4552: Cargo Crane
9V Large Builds Official Sets Town Train Train Sets 

4552: Cargo Crane

July 22, 2026July 22, 2026 Master Builder

Year Released: 1995InstructionsBricklink

4525: Road and Rail Repair
9V Official Sets Small Builds Town Train Train Sets 

4525: Road and Rail Repair

July 22, 2026July 22, 2026 Master Builder

Year Released: 1994InstructionsBricklink

NEW ALTERNATE BUILDS ADDED!View All

1656 – Back D
Alternate Builds Classic Town Fire Medium Builds Town Town Alternate Builds 

1656 – Back D

July 22, 2026July 22, 2026 Master Builder
1656 – Back C
Alternate Builds Classic Town Fire Medium Builds Town Town Alternate Builds 

1656 – Back C

July 22, 2026July 22, 2026 Master Builder
1656 – Back B
Alternate Builds Classic Town Fire Medium Builds Town Town Alternate Builds 

1656 – Back B

July 22, 2026July 22, 2026 Master Builder
1656 – Back A
Alternate Builds Classic Town Fire Medium Builds Town Town Alternate Builds 

1656 – Back A

July 22, 2026July 22, 2026 Master Builder
4552 – Back C
Alternate Builds Large Builds Train Train Alternate Builds 

4552 – Back C

July 22, 2026July 22, 2026 Master Builder
4552 – Back B
Alternate Builds Large Builds Train Train Alternate Builds 

4552 – Back B

July 22, 2026July 22, 2026 Master Builder
4552 – Back A
Alternate Builds Large Builds Train Train Alternate Builds 

4552 – Back A

July 22, 2026July 22, 2026 Master Builder
4525 – Back B
Alternate Builds Small Builds Train Train Alternate Builds 

4525 – Back B

July 22, 2026July 22, 2026 Master Builder
4525 – Back A
Alternate Builds Small Builds Train Train Alternate Builds 

4525 – Back A

July 22, 2026July 22, 2026 Master Builder
4536 – Back C
Alternate Builds Medium Builds Train Train Alternate Builds 

4536 – Back C

July 10, 2026July 10, 2026 Master Builder

STAR WARSView All

7141 – Back A
Alternate Builds Episode I Small Builds Star Wars Star Wars Alternate Builds 

7141 – Back A

December 29, 2021December 29, 2021 Master Builder

From: 7141: Naboo FighterName: TBDSubmitted by: USERInstructions

HARRY POTTERView All

4720 – Back A
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Instructions Added Medium Alt Build Medium Builds 

4720 – Back A

June 14, 2026June 23, 2026 Master Builder

From: 4720: Knockturn AlleyName: Docks Instructions: View PDF | Download .io File

INSTRUCTIONS ADDEDView All

6886 – Back B
Alternate Builds Instructions Added Medium Alt Build Medium Builds Space Space Police I Space Police I Alternate Builds 

6886 – Back B

6879 – Back B
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Small Alt Build Small Builds 

6879 – Back B

6402 – Back A
Alternate Builds Instructions Added Paradisa Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6402 – Back A

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

6040 – Back C

6541 – Back G
Alternate Builds Classic Town Harbor Instructions Added Large Alt Build Large Builds Town Town Alternate Builds 

6541 – Back G

1736 – Back A
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Very Small Alt Build Very Small Builds 

1736 – Back A

735 – Back A
Alternate Builds Basic Instructions Added Large Alt Build Large Builds LEGOLAND Alternate Builds Universal Building Set Universal Building Set Alternate Builds 

735 – Back A

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

6367 – Back B

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

Book 6000 – Page 46-47

6984 – Back D
ABCs Alternate Builds Instructions Added Large Alt Build Large Builds Space Space Police II Space Police II Alternate Builds 

6984 – Back D

6354 – Back D
Alternate Builds Classic Town Instructions Added Police Small Alt Build Small Builds Town Town Alternate Builds 

6354 – Back D

Book 6000 – Page 26-27
Classic Town Idea Book Instructions Added Medium Alt Build Town 

Book 6000 – Page 26-27

6075-1 – Inside B
Castle Castle Alternate Builds Instructions Added Large Alt Build Large Builds Wolfpack 

6075-1 – Inside B

6848 – Back C
Alternate Builds Duplicate Alternate Number Futuron Futuron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6848 – Back C

6515 – Back C
Airport Alternate Builds Classic Town Instructions Added Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6515 – Back C

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

1787 – Back C

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

6712 – Back A

1491 – Back B
Alternate Builds Black Knights Castle Castle Alternate Builds Instructions Added Small Alt Build Small Builds 

1491 – Back B

6482 – Back C
Alternate Builds Classic Town Hospital Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6482 – Back C

6361 – Back C
Alternate Builds Classic Town Construction Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6361 – Back C

6055 – Back C
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Small Alt Build Small Builds 

6055 – Back C

6923 – Back C
Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Medium Alt Build Medium Builds Space 

6923 – Back C

6931 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6931 – Back C

6901 – Back B
ABCs Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6901 – Back B

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

894 – Back C

6042 – Back C
Alternate Builds Castle Castle Alternate Builds Crusaders Instructions Added Small Alt Build Small Builds 

6042 – Back C

6854 – Back C
Alternate Builds Exploriens Exploriens Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6854 – Back C

6256 – Back B
Alternate Builds Instructions Added Islanders Pirates Pirates Alternate Builds Pirates I Small Alt Build Small Builds 

6256 – Back B

6370 – Back B
Alternate Builds Building Classic Town Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6370 – Back B

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

897 – Back A

920 – Back G
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

920 – Back G

Viva’s Space Scooter
Alternate Instructions Included Classic Space Classic Space Alternate Builds Comic Book Instructions Added Jim Spaceborn Space 

Viva’s Space Scooter

6393 – Back E
Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6393 – Back E

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

6262 – Back C

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

6085 – Back C

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

6683 – Back B

Book 6000 – Page 76-77
Castle Castle Alternate Builds Idea Book Instructions Added Small Alt Build 

Book 6000 – Page 76-77

6877 – Back A
Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Small Alt Build Small Builds Space 

6877 – Back A

2846 – Back A
Alternate Builds Indians Instructions Added Very Small Alt Build Very Small Builds Western Western Alternate Builds 

2846 – Back A

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

6985 – Back D

6939 – Back D
ABCs Alternate Builds Instructions Added Medium Alt Build Medium Builds Space Spyrius Spyrius Alternate Builds 

6939 – Back D

6885 – Back A
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6885 – Back A

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

4709 – Back A

6510 – Back B
Alternate Builds Instructions Added Race Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6510 – Back B

735 – Back D
Alternate Builds Basic Instructions Added Large Alt Build Large Builds LEGOLAND Alternate Builds Universal Building Set Universal Building Set Alternate Builds 

735 – Back D

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

6397 – Back A

6669 – Back C
Alternate Builds Classic Town Instructions Added Race Small Alt Build Small Builds Town Town Alternate Builds 

6669 – Back C

6390 – Inside A
Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Inside A

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

6755 – Back B

4582 – Instructions A
Alternate Builds Drome Racers Instructions Added Racers Racers Alternate Builds Very Small Alt Build Very Small Builds 

4582 – Instructions A

6354 – Back B
Alternate Builds Classic Town Instructions Added Police Small Alt Build Small Builds Town Town Alternate Builds 

6354 – Back B

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

6882 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6882 – Back C

6394 – Back D
Alternate Builds Classic Town Gas Station Instructions Added Large Alt Build Large Builds Town Town Alternate Builds 

6394 – Back D

T42
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

1736 – Back B
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Very Small Alt Build Very Small Builds 

1736 – Back B

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

6561 – Back A

6825 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds 

6825 – Back B

6718 – Back A
Alternate Builds Indians Instructions Added Small Alt Build Small Builds Western Western Alternate Builds 

6718 – Back A

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

6716 – Back C

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

6381 – Back D

6541 – Back C
Alternate Builds Classic Town Harbor Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6541 – Back C

6891 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6891 – Back A

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

6040 – Back A

6896 – Back A
Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Small Alt Build Small Builds Space 

6896 – Back A

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

6876 – Back B

Book 260 – Page 48-49
Futuron Futuron Alternate Builds Idea Book Instructions Added Small Alt Build Space 

Book 260 – Page 48-49

6801 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6801 – Back C

8369 – Inside A
Alternate Builds Instructions Added Racers Racers Alternate Builds Radio Control Small Alt Build Small Builds 

8369 – Inside A

6397 – Back D
Alternate Builds Classic Town Gas Station Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6397 – Back D

6370 – Back A
Alternate Builds Building Classic Town Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6370 – Back A

6037 – Back C
Alternate Builds Castle Castle Alternate Builds Fright Knights Instructions Added Small Alt Build Small Builds 

6037 – Back C

6506 – Back C
Alternate Builds Classic Town Instructions Added Police Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6506 – Back C

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

6397 – Back E

889 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Builds 

889 – Back A

Book 6000 – Page 36-37
Classic Town Idea Book Instructions Added Large Alt Build Large Builds Town 

Book 6000 – Page 36-37

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

924 – Back D

4735 – Back A
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Instructions Added Small Builds 

4735 – Back A

Pathfinder
Classic Space Classic Space Alternate Builds Comic Book Instructions Added Jim Spaceborn Medium Alt Build Medium Builds Space 

Pathfinder

6933 – Back B
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6933 – Back B

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

6940 – Inside A

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

6562 – Back D

6804 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6804 – Back C

7161 – Instructions 4
Alternate Builds Instructions Added Small Alt Build Small Builds Star Wars Star Wars Alternate Builds 

7161 – Instructions 4

6340 – Back B
Alternate Builds Classic Town Fire Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6340 – Back B

Book 6000 – Page 72-73
Classic Space Classic Space Alternate Builds Idea Book Instructions Added Medium Alt Build Space 

Book 6000 – Page 72-73

Book 250 – Page 40-41
Castle Castle Alternate Builds Idea Book Instructions Added Medium Alt Build Medium Builds 

Book 250 – Page 40-41

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

6831 – Back C

6542 – Back F
Alternate Builds Classic Town Harbor Instructions Added Large Alt Build Large Builds Town Town Alternate Builds 

6542 – Back F

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

4702 – Back B

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

6951 – Back A

6801 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6801 – Back B

6205 – Back B
Alternate Builds Episode III Instructions Added Small Alt Build Small Builds Star Wars Star Wars Alternate Builds 

6205 – Back B

6985 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6985 – Back C

6394 – Back B
Alternate Builds Classic Town Gas Station Instructions Added Large Alt Build Large Builds Town Town Alternate Builds 

6394 – Back B

6397 – Back C
Alternate Builds Classic Town Gas Station Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6397 – Back C

6896 – Back B
Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Small Alt Build Small Builds Space 

6896 – Back B

6512 – Back A
Alternate Builds Classic Town Construction Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6512 – Back A

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

1793 – Back A

EXPLORE MORE OFFICIAL SETS

6256: Islander Catamaran
Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds 

6256: Islander Catamaran

June 6, 2022June 6, 2022 Master Builder

Year Released: 1994BricklinkInstructions

1821: Rally Racers
ABCs Box Plus Classic Town Medium Builds Official Sets Playscape/Play Stage Box Race Town Town Sets 

1821: Rally Racers

February 10, 2025March 22, 2025 Master Builder
6270: Forbidden Island
Box Story Medium Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets 

6270: Forbidden Island

April 4, 2022February 21, 2025 Master Builder
6826: Crater Crawler
Classic Space Classic Space Sets Official Sets Very Small Builds 

6826: Crater Crawler

September 26, 2019October 22, 2019 Master Builder
6016: Knight’s Arsenal
Castle Castle Sets Lion Knights Official Sets Very Small Builds 

6016: Knight’s Arsenal

October 12, 2021October 12, 2021 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
6209: Slave I (2nd edition)
Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets 

6209: Slave I (2nd edition)

February 1, 2024February 1, 2024 Master Builder
6341: Gas N’ Go Flyer
Airport Classic Town Official Sets Small Builds Town Town Sets 

6341: Gas N’ Go Flyer

December 27, 2021December 27, 2021 Master Builder
6359: Horse Trailer
Classic Town Medium Builds Official Sets Recreation Town Town Sets 

6359: Horse Trailer

October 8, 2024October 8, 2024 Master Builder
7474: Urban Avenger vs. Raptor
Dino Attack Official Sets Small Builds 

7474: Urban Avenger vs. Raptor

April 27, 2023April 27, 2023 Master Builder
6513: Glade Runner
Classic Town Harbor Official Sets Small Builds Town Town Sets Wrecker 

6513: Glade Runner

May 10, 2022May 10, 2022 Master Builder
6780: XT-Starship
ABCs Classic Space Classic Space Sets Medium Builds Official Sets Space 

6780: XT-Starship

October 12, 2021September 9, 2024 Master Builder
1657: Bird
Basic Set Duplo Duplo Sets Official Sets Very Small Builds 

1657: Bird

December 28, 2021December 29, 2021 Master Builder
8812: Aero Hawk II
Medium Builds Official Sets Technic Technic Sets 

8812: Aero Hawk II

January 22, 2026January 22, 2026 Master Builder
6078: Royal Drawbridge
Castle Castle Sets Daniel August Krentz Large Builds Official Sets Royal Knights 

6078: Royal Drawbridge

January 12, 2022July 29, 2023 Master Builder
6573: Arctic Expedition
Arctic Medium Builds Official Sets Town Town Sets 

6573: Arctic Expedition

May 22, 2026May 22, 2026 Master Builder

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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

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The classic space set that never was.

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