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

7153 – Back A
Alternate Builds Episode II Large Builds Star Wars Star Wars Alternate Builds 

7153 – Back A

May 10, 2022May 10, 2022 Master Builder
1789 – Back C
Alternate Builds Medium Builds Space Unitron Unitron Alternate Builds 

1789 – Back C

July 18, 2020July 18, 2020 Master Builder
8044 – Inside B
Alternate Builds Medium Builds Technic Technic Alternate Builds 

8044 – Inside B

August 23, 2024August 23, 2024 Master Builder
6387 – Back D
Alternate Builds Classic Town Coast Guard Medium Builds Town Town Alternate Builds 

6387 – Back D

July 15, 2022July 15, 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
6590 – Back B
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6590 – Back B

July 13, 2022May 17, 2023 Master Builder
6348 – Back C
Alternate Builds Classic Town Medium Builds Police Town Town Alternate Builds 

6348 – Back C

June 23, 2026June 23, 2026 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 – Instructions 5
Alternate Builds Episode I Medium Builds Star Wars Star Wars Alternate Builds 

7151 – Instructions 5

April 22, 2026April 22, 2026 Master Builder

From: 7151: Sith InfiltratorName: TBDSubmitted by: USERInstructions

HARRY POTTERView All

4714 – Back C
Alternate Builds Harry Potter Harry Potter Alternate Builds Small Builds Sorcerer's Stone 

4714 – Back C

March 2, 2023March 2, 2023 Master Builder

From: 4714: Gringott’s BankName: TBDSubmitted by: USERInstructions:

INSTRUCTIONS ADDEDView All

6615 – Back B
Airport Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6615 – 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

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

6067 – Inside A

6662 – Back C
Alternate Builds Classic Town Construction Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6662 – Back C

6257 – Back A
Alternate Builds Instructions Added Pirates Pirates Alternate Builds Pirates I Small Alt Build Small Builds 

6257 – Back A

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

6901 – Back E

6845 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6845 – Back A

Book 200 – Page 36-37
Alternate Instructions Included Classic Space Classic Space Alternate Builds Idea Book Instructions Added Space 

Book 200 – Page 36-37

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

6861 – Back A

6675 – Back C
Alternate Builds Classic Town Instructions Added Off-Road Small Alt Build Small Builds Town Town Alternate Builds 

6675 – Back C

6983 – Back D
Alternate Builds Ice Planet 2002 Ice Planet 2002 Alternate Builds Instructions Added Large Alt Build Large Builds 

6983 – Back D

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

6939 – Back D

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

6100 – Back A

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

6956 – Back C

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

6590 – Back E

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

6066 – Back B

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

6989 – 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

6380 – Back E
Alternate Builds Classic Town Hospital Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6380 – Back E

6832 – Back C
Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6832 – Back C

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

6949 – Back D

6929 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6929 – Back A

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

1787 – Back A

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

6667 – Back C

4720 – Back B
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

4720 – Back B

6970 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Large Alt Build Large Builds Space 

6970 – Back C

Book 260 – Page 32-33
Alternate Instructions Included Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Idea Book Instructions Added Large Alt Build Large Builds Medium Alt Build Medium Builds 

Book 260 – Page 32-33

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

6975 – Back B
Alternate Builds Instructions Added Large Alt Build Large Builds Space UFO UFO Alternate Builds 

6975 – Back B

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

720 – Back C

6020 – Back B
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Small Alt Build Small Builds 

6020 – Back B

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

535 – Back B

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

6848 – Back C

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

4592 – Back A

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

6875 – Back D

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

6552 – Back E

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

6012 – Back C

6685 – Back A
Alternate Builds Classic Town Fire Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6685 – Back A

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

6510 – Back A

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

6043 – Back C

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

6381 – Back A

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

6040 – Back C

6941 – Inside B
Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Large Alt Build Large Builds Space 

6941 – Inside B

1916 (3015) – Back C
Alternate Builds Instructions Added Space Space Police II Space Police II Alternate Builds Very Small Alt Build Very Small Builds 

1916 (3015) – Back C

1747 – Back A
Alternate Builds Instructions Added Pirates Pirates Alternate Builds Pirates I Very Small Alt Build Very Small Builds 

1747 – Back A

6824 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6824 – Back A

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

6060 – Back A

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

8369 – Inside A

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

6590 – Back C

4706 – Back C
Alternate Builds Harry Potter Harry Potter Alternate Builds Instructions Added Medium Builds Sorcerer's Stone 

4706 – Back C

6932 – Back A
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6932 – Back A

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

6511 – Back C

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

6454 – Back B

6738 – Back B
Alternate Builds Alternate Instructions Included Instructions Added Island Xtreme Stunts Island Xtreme Stunts Alternate Builds Medium Alt Build Medium Builds 

6738 – Back B

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

1096 – Back B

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

6346 – Back D

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

6877 – Back B

6649 – Back A
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6649 – Back A

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

6481 – Back C

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

6155 – Back A

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

6430 – Back B

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

6256 – Back C

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

4558 – Inside B

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

7115 – Back B

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

6354 – 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

6649 – Back B
Alternate Builds Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds Traffic 

6649 – 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

Book 6000 – Page 48-49
Classic Town Idea Book Instructions Added Large Alt Build Large Builds Town 

Book 6000 – Page 48-49

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

1858 – Back B

7779 – Instructions B
Alternate Builds Batman I BATMAN™ BATMAN™ Alternate Builds Instructions Added Medium Alt Build Small Alt Build Small Builds 

7779 – Instructions B

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

6882 – Back C

6375 – Back A
Alternate Builds Cargo Classic Town Instructions Added Medium Alt Build Medium Builds Town Town Alternate Builds 

6375 – Back A

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

6833 – Back A

6828 – Back C
Alternate Builds Futuron Futuron Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6828 – Back C

7124 – Back B
Alternate Builds Instructions Added Small Alt Build Small Builds Star Wars Star Wars Alternate Builds 

7124 – Back B

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

6989 – Back B

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

6808 – Back B

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

1787 – Back C

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

4704 – Back B

6533 – Back C
Alternate Builds Classic Town Instructions Added Police Town Town Alternate Builds Very Small Alt Build Very Small Builds 

6533 – Back C

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

720 – Instructions A

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

6931 – Back A

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

6590 – Back A

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

6055 – 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

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

6939 – Back A

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

6848 – Back B

6358 – Back A
Alternate Builds Classic Town Fire Instructions Added Small Alt Build Small Builds Town Town Alternate Builds 

6358 – Back A

6746 – Back B
Alternate Builds Indians Instructions Added Small Alt Build Small Builds Western Western Alternate Builds 

6746 – Back B

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

6077-2 – Back C

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

6716 – Back B

6739 – Back B
Alternate Builds Alternate Instructions Included Instructions Added Island Xtreme Stunts Island Xtreme Stunts Alternate Builds Small Alt Build Small Builds 

6739 – Back B

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

6367 – Back D

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

6827 – Back B

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

6510 – Back B

6017 – Back C
Alternate Builds Castle Castle Alternate Builds Instructions Added Very Small Alt Build Very Small Builds 

6017 – Back C

Airport Alternate Builds Classic Town Instructions Added Large Alt Build Large Builds Town Town Alternate Builds 

6346 – Back A

6926 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6926 – Back A

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

6955 – Back D

EXPLORE MORE OFFICIAL SETS

6553: Crisis News Crew
Medium Builds Official Sets Outback Town Town Sets 

6553: Crisis News Crew

December 4, 2023December 4, 2023 Master Builder

Year Released: 1997BricklinkInstructions

6389: Fire Control Center
Classic Town Extra Large Builds Fire Official Sets Town Town Sets 

6389: Fire Control Center

January 24, 2022January 24, 2022 Master Builder
6931: FX-Star Patroller
ABCs Classic Space Classic Space Sets Medium Builds Official Sets Space 

6931: FX-Star Patroller

January 12, 2021March 20, 2025 Master Builder
6649: Street Sweeper
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6649: Street Sweeper

July 8, 2022July 8, 2022 Master Builder
6987: Message Intercept Base
Blacktron Blacktron Sets Daniel August Krentz Extra Large Builds Official Sets Space 

6987: Message Intercept Base

September 12, 2019March 2, 2026 Master Builder
6876: Alienator
ABCs Bjarne Tveskov Blacktron Blacktron Sets Official Sets Small Builds Space 

6876: Alienator

November 16, 2019October 16, 2024 Master Builder
600: Police Patrol
Classic Town Official Sets Police Town Town Sets Very Small Builds 

600: Police Patrol

July 11, 2024July 11, 2024 Master Builder
6694: Car with Camper
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6694: Car with Camper

May 19, 2022May 19, 2022 Master Builder
6492: Hypno Cruiser
Medium Builds Official Sets Time Cruisers Time Cruisers Sets 

6492: Hypno Cruiser

December 29, 2021March 20, 2025 Master Builder
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
6055: Prisoner Convoy
Castle Castle Sets Forestmen Lion Knights Official Sets Small Builds 

6055: Prisoner Convoy

May 20, 2021October 1, 2024 Master Builder
1620: Astro Dart
Bjarne Tveskov Bonus/Value Pack Sets Futron Sets Futuron Official Sets Space Very Small Builds 

1620: Astro Dart

September 6, 2023September 7, 2023 Master Builder
6076: Dark Dragon’s Den
Castle Castle Sets Dragon Knights Medium Builds Official Sets 

6076: Dark Dragon’s Den

December 27, 2021December 27, 2021 Master Builder
1526: Unknown (Space Radar Buggy)
Classic Space Classic Space Sets Official Sets Small Builds Space 

1526: Unknown (Space Radar Buggy)

August 20, 2025August 29, 2025 Master Builder
6854: Alien Fossilizer
ABCs Exploriens Exploriens Sets Official Sets Small Builds Space 

6854: Alien Fossilizer

July 15, 2022March 22, 2025 Master Builder
8957: Mine Mech
Official Sets Power Miners Power Miners Sets Small Builds 

8957: Mine Mech

March 27, 2026March 27, 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.