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

5978 – Back A
Adventurers Adventurers Alternate Builds Alternate Builds Desert Large Builds 

5978 – Back A

October 28, 2019April 4, 2020 Master Builder
4883 – Instructions H
Alternate Builds Designer Sets Designer Sets Alternate Builds Instructions Added Small Alt Build Small Builds 

4883 – Instructions H

August 2, 2021August 28, 2024 Master Builder
379 – Back A
Alternate Builds Classic Town Medium Builds Town Town Alternate Builds Traffic 

379 – Back A

April 10, 2021April 10, 2021 Master Builder
8064 – Back A
Alternate Builds Medium Builds Technic Technic Alternate Builds 

8064 – Back A

February 8, 2024February 8, 2024 Master Builder
7139 – Back A
Alternate Builds Episode IV/V/VI Small Builds Star Wars Star Wars Alternate Builds 

7139 – Back A

June 27, 2022February 24, 2023 Master Builder
6812 – Back A
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6812 – Back A

February 12, 2021January 6, 2025 Master Builder
6393 – Back A
Alternate Builds Classic Town Extra Large Builds Town Town Alternate Builds Traffic 

6393 – Back A

June 28, 2022June 30, 2024 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

7115 – Back A
Alternate Builds Episode I Instructions Added Small Alt Build Small Builds Star Wars Star Wars Alternate Builds 

7115 – Back A

April 8, 2026April 22, 2026 Master Builder

From: 7115: Gungan PatrolName: Gungan Outpost Instructions: View PDF | Download .io File

HARRY POTTERView All

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

4707 – Back B

May 26, 2024May 30, 2024 Master Builder

From: 4707: Hagrid’s HutName: A Wizard Campfire Instructions: View PDF | Download .io File

INSTRUCTIONS ADDEDView All

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

6801 – Back B

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

6340 – Back C

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

6481 – Back E

6953 – Back A
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6953 – Back A

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

6370 – Back C

6811 – Back B
Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Space Very Small Alt Build Very Small Builds 

6811 – Back B

Book 6000 – Page 80-81
ABCs Castle Castle Alternate Builds Idea Book Instructions Added Large Alt Build 

Book 6000 – Page 80-81

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

6205 – Back B

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

918 – Back E

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

924 – Back D

6206 – Back A
Alternate Builds Episode IV/V/VI Instructions Added Medium Alt Build Medium Builds Star Wars Star Wars Alternate Builds 

6206 – Back A

6899 – Back C
Alternate Builds Alternate Instructions Included Exploriens Exploriens Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6899 – Back C

6542 – Back B
Alternate Builds Classic Town Harbor Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6542 – Back B

6698 – Back D
Alternate Builds Classic Town Harbor Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6698 – Back D

8024 – Back C
Alternate Builds Instructions Added Medium Alt Build Medium Builds Technic Technic Alternate Builds 

8024 – Back C

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

6381 – 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

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

Book 260 – Page 48-49

6357 – Back C
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6357 – Back C

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

6667 – Back B

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

894 – Back A

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

6340 – Back A

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

6641 – Back D

6663 – Back B
Alternate Builds Classic Town Harbor Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6663 – Back B

6955 – Back C
Alternate Builds Instructions Added Large Alt Build Large Builds Space Space Police I Space Police I Alternate Builds 

6955 – Back C

6021 – Back B
Alternate Builds Castle Castle Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6021 – Back B

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

6667 – Back C

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

6667 – Back A

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

6933 – Back A

6263 – Back A
Alternate Builds Imperial Guards Instructions Added Medium Alt Build Medium Builds Pirates Pirates Alternate Builds Pirates I 

6263 – Back A

6989 – Back A
ABCs Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added M:Tron M:Tron Alternate Builds 

6989 – Back A

6035 – Back B
Alternate Builds Black Falcons Castle Castle Alternate Builds Instructions Added Small Alt Build Small Builds 

6035 – 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

194 – Back B
Alternate Builds Building Set with People Building Set with People Alternate Builds Instructions Added Small Alt Build Small Builds 

194 – Back B

7161 – Back A
Alternate Builds Instructions Added Medium Alt Build Medium Builds Star Wars Star Wars Alternate Builds 

7161 – Back A

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

6513 – Back B

6267 – Back D
Alternate Builds Imperial Soldiers Instructions Added Medium Alt Build Medium Builds Pirates Pirates Alternate Builds Pirates I 

6267 – Back D

6833 – Back B
Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Space Very Small Alt Build Very Small Builds 

6833 – Back B

6648 – Back A
Alternate Builds Classic Town Instructions Added Race Small Alt Build Small Builds Town Town Alternate Builds 

6648 – Back A

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

1793 – Back A

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

4705 – Back B

Book 260 – Page 44-45
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

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

1968 – Back C

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

2846 – Back A

6971 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Large Alt Build Large Builds Space 

6971 – Back C

6673 – Back B
Airport Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6673 – Back B

6430 – Back D
Alternate Builds Classic Town Instructions Added Police Small Alt Build Small Builds Town Town Alternate Builds 

6430 – Back D

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

6876 – Back A

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

928 – Back G

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

4720 – Back A

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

8369 – Inside D

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

6933 – Back D

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

6440 – Back C

6190 – Back C
Alternate Builds Aquashark Aquazone Aquazone Alternate Builds Instructions Added Large Alt Build Large Builds 

6190 – Back C

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

6394 – Back A

6781 – Back B
Alternate Builds Instructions Added Medium Alt Build Medium Builds Space Space Police I Space Police I Alternate Builds 

6781 – Back B

6552 – Back E
Alternate Builds Classic Town Instructions Added Medium Builds Recreation Town Town Alternate Builds 

6552 – Back E

6341 – Back D
Airport Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6341 – Back D

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

6077-2 – Inside A

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

6872 – Back D

Book 250 – Page 22-23
Classic Town Idea Book Instructions Added Small Alt Build Town 

Book 250 – Page 22-23

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

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

6511 – Back B

1875 – Back A
Alternate Builds Blacktron Blacktron Alternate Builds Bonus/Value Pack Alternate Builds Instructions Added Small Alt Build Small Builds Space 

1875 – Back A

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

6900 – Back A

6670 – Back C
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Wrecker 

6670 – Back C

Book 6000 – Page 20-21
Classic Town Idea Book Instructions Added Medium Alt Build Town 

Book 6000 – Page 20-21

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

6040 – Back D

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

6354 – Back D

6672 – Back C
Alternate Builds Classic Town Instructions Added Off-Road Small Alt Build Small Builds Town Town Alternate Builds 

6672 – Back C

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

6367 – Back B

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

6515 – Back A

Blacktron Time Machine
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

Book 6000 – Page 28-29
Classic Town Idea Book Instructions Added Medium Alt Build Town 

Book 6000 – Page 28-29

6670 – Back A
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Wrecker 

6670 – Back A

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

6669 – Back B

6357 – Back E
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6357 – Back E

6852 – Back C
Alternate Builds Instructions Added Small Alt Build Small Builds Space Space Police II Space Police II Alternate Builds 

6852 – Back C

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

6827 – Back C

6529 – Back B
Airport Alternate Builds Classic Town Instructions Added Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6529 – Back B

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

6043 – Back A

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

6390 – Back B

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

8675 – Back A

6041 – Back D
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Small Alt Build Small Builds 

6041 – Back D

6265 – Back A
Alternate Builds Imperial Soldiers Instructions Added Pirates Pirates Alternate Builds Pirates I Small Builds 

6265 – Back A

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

6755 – Back B

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

6513 – Back A

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

6273 – Back B

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

6951 – Back D

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

6970 – Back E

6016 – Back C
Alternate Builds Castle Castle Alternate Builds Instructions Added Lion Knights Very Small Alt Build Very Small Builds 

6016 – Back C

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

1680 – Back B
Alternate Builds Castle Castle Alternate Builds Forestmen Instructions Added Very Small Alt Build Very Small Builds 

1680 – Back B

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

6506 – Back B

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

6826 – Back D

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

1616 – Back A

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

6482 – Back D

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

6580 – Back B

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

6923 – Back A

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

EXPLORE MORE OFFICIAL SETS

1593: Super Model
Classic Space Classic Space Sets Large Builds Official Sets Space Super Model 

1593: Super Model

February 3, 2021March 18, 2024 Master Builder

Year Released: 1983BricklinkInstructions

6311: Curved Road Plates
Classic Town Official Sets Supplemental Town 

6311: Curved Road Plates

October 10, 2022October 10, 2022 Master Builder
1963: Basic Set with Storage Case
Basic Box Plus Large Builds Official Sets Storage Container Universal Building Set 

1963: Basic Set with Storage Case

October 9, 2024October 9, 2024 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
6750: Sonic Robot
Classic Space Classic Space Sets Official Sets Small Builds 

6750: Sonic Robot

September 22, 2019September 28, 2019 Master Builder
1730: Snow Scooter
Classic Town Off-Road Official Sets Town Town Sets Very Small Builds 

1730: Snow Scooter

April 11, 2023April 11, 2023 Master Builder
6545: Search N’ Rescue
Classic Town Large Builds Official Sets Police Town Town Sets 

6545: Search N’ Rescue

June 2, 2022June 2, 2022 Master Builder
1665: Duel FX Racers
Official Sets Small Builds Town Town Sets 

1665: Duel FX Racers

April 30, 2024April 30, 2024 Master Builder
6009: Black Knight
Black Knights Castle Castle Sets Official Sets Very Small Builds 

6009: Black Knight

April 9, 2020April 9, 2020 Master Builder
1490: Town Bank
Classic Town Medium Builds Official Sets Town Town Sets Traffic 

1490: Town Bank

January 23, 2024January 23, 2024 Master Builder
6706: Frontier Patrol
Cowboys Official Sets Very Small Builds Western Western Sets 

6706: Frontier Patrol

October 10, 2023October 10, 2023 Master Builder
8922: Gadunka
BIONICLE BIONICLE Sets Extra Large Builds Official Sets Warriors 

8922: Gadunka

March 6, 2026March 6, 2026 Master Builder
6342: Beach Rescue Chopper
Classic Town Coast Guard Medium Builds Official Sets Town Town Sets 

6342: Beach Rescue Chopper

July 15, 2022July 15, 2022 Master Builder
6643: Fire Truck
Classic Town Fire Official Sets Small Builds Town Town Sets 

6643: Fire Truck

July 2, 2024July 2, 2024 Master Builder
6081: King’s Mountain Fortress
Castle Castle Sets Crusaders Daniel August Krentz Extra Large Builds Official Sets 

6081: King’s Mountain Fortress

June 30, 2022July 29, 2023 Master Builder
UFO Value Pack (VP-5)
Bonus/Value Pack Sets Bonus/Value Packs Exploriens Exploriens Sets Official Sets Small Builds Space UFO UFO Sets 

UFO Value Pack (VP-5)

December 10, 2025March 14, 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.