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Back of the Box Builds

Back of the Box Builds

LEGO Alternate Builds!

  • SETS
    • Adventurers
    • Aquazone
    • Belville
    • Building Set with People
    • Castle
    • Duplo
    • Fabuland
    • Harry Potter
    • Holiday and Event
    • LEGOLAND
    • Model Team
    • Pirates
    • Space
    • Star Wars
    • Technic
    • 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

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

6018 – Back C

October 5, 2019September 24, 2024 Master Builder
6083-2 – Back B
Alternate Builds Duplicate Alternate Number Medium Builds Ninja Ninja Alternate Builds 

6083-2 – Back B

December 16, 2025December 16, 2025 Master Builder
770 – Back A
Alternate Builds Hospital LEGOLAND LEGOLAND Alternate Builds Small Builds 

770 – Back A

September 15, 2022February 14, 2024 Master Builder
6175 – Back B
Alternate Builds Aquanauts Aquazone Aquazone Alternate Builds Medium Builds 

6175 – Back B

January 20, 2022January 20, 2022 Master Builder
6982 – Back A
Alternate Builds Exploriens Exploriens Alternate Builds Extra Large Builds 

6982 – Back A

November 9, 2019November 9, 2019 Master Builder
6780 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6780 – Back C

April 2, 2022April 3, 2022 Master Builder
6950 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Medium Builds Space 

6950 – Back A

June 16, 2022June 28, 2022 Master Builder

NEW INSTRUCTIONS ADDED!View All

  • 5540 – Back A
    Alternate Builds Instructions Added Large Alt Build Large Builds Model Team Model Team Alternate Builds 

    5540 – Back A

  • 5510 – Back A
    Alternate Builds Instructions Added Large Alt Build Large Builds Model Team Model Team Alternate Builds 

    5510 – Back A

  • 5580 – Back A
    Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds 

    5580 – Back A

  • 5550 – Back A
    Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds 

    5550 – Back A

  • 5581 – Back A
    Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds 

    5581 – Back A

5540 – Back A5540 – Back A5510 – Back A5510 – Back A5580 – Back A5580 – Back A5550 – Back A5550 – Back A5581 – Back A5581 – Back A

NEW OFFICIAL SETS ADDED!View All

5540: Formula I Racer
Large Builds Model Team Model Team Sets Official Sets 

5540: Formula I Racer

February 10, 2026February 10, 2026 Master Builder

Year Released: 1986BricklinkInstructions

5510: Off Road 4×4
Large Builds Model Team Model Team Sets Official Sets 

5510: Off Road 4×4

February 10, 2026February 10, 2026 Master Builder

Year Released: 1986BricklinkInstructions

5580: Highway Rig
Extra Large Builds Model Team Model Team Sets Official Sets 

5580: Highway Rig

February 9, 2026February 9, 2026 Master Builder

Year Released: 1986BricklinkInstructions

NEW ALTERNATE BUILDS ADDED!View All

5540 – Back A
Alternate Builds Instructions Added Large Alt Build Large Builds Model Team Model Team Alternate Builds 

5540 – Back A

February 10, 2026February 10, 2026 Master Builder
5510 – Back A
Alternate Builds Instructions Added Large Alt Build Large Builds Model Team Model Team Alternate Builds 

5510 – Back A

February 10, 2026February 10, 2026 Master Builder
5580 – Back A
Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds 

5580 – Back A

February 9, 2026February 9, 2026 Master Builder
5550 – Back A
Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds 

5550 – Back A

February 9, 2026February 9, 2026 Master Builder
5581 – Back A
Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds 

5581 – Back A

January 31, 2026February 9, 2026 Master Builder
5521 – Back A
Alternate Builds Instructions Added Large Alt Build Large Builds Model Team Model Team Alternate Builds 

5521 – Back A

January 29, 2026January 31, 2026 Master Builder
6536 – Back C
Airport Alternate Builds Classic Town Small Builds Town Town Alternate Builds 

6536 – Back C

January 22, 2026January 22, 2026 Master Builder
6536 – Back B
Airport Alternate Builds Classic Town Small Builds Town Town Alternate Builds 

6536 – Back B

January 22, 2026January 22, 2026 Master Builder
6536 – Back A
Airport Alternate Builds Classic Town Small Builds Town Town Alternate Builds 

6536 – Back A

January 22, 2026January 22, 2026 Master Builder
8876 – Back B
Alternate Builds Castle Castle Alternate Builds Knights Kingdom II Large Builds 

8876 – Back B

January 20, 2026January 20, 2026 Master Builder

STAR WARSView All

7260 – Back B
Alternate Builds Episode III Large Builds Star Wars Star Wars Alternate Builds 

7260 – Back B

March 1, 2023March 3, 2023 Master Builder

From: 7260: Wookiee CatamaranName: TBDSubmitted by: USERInstructions:

HARRY POTTERView All

4751 – Back A
Alternate Builds Harry Potter Harry Potter Alternate Builds Prisoner of Azkaban Small Builds 

4751 – Back A

May 16, 2023May 16, 2023 Master Builder

From: 4751: Harry and the Marauder’s MapName: TBDSubmitted by: USERInstructions:

INSTRUCTIONS ADDEDView All

928 – Back E
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Large Alt Build Large Builds Space 

928 – Back E

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

6668 – 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

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

6020 – Back A

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

6080 – Back C

6837 – Back C
Alternate Builds Insectoids Insectoids Alternate Builds Instructions Added Small Alt Build Small Builds 

6837 – Back C

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

6211 – Back B

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

Pathfinder

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

6953 – Back C

6894 – Back A
Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6894 – Back A

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

6262 – Back C

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

6890 – Back B

6750 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds 

6750 – Back A

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

6027 – Back C

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

6017 – Back A

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

6827 – Back B

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

720 – Instructions B

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

720 – Inside F

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

4708 – Back C

6082 – Back D
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Large Alt Build Large Builds 

6082 – Back D

6901 – Back C
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6901 – Back C

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

6135 – Back B

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

6085 – Back C

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

6646 – Back B

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

7124 – Back B

6444 – Back C
Alternate Builds Classic Town Instructions Added Outback Small Builds Town Town Alternate Builds 

6444 – Back C

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

194 – Back C

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

6939 – Back C

6484 – Back B
Alternate Builds Classic Town Instructions Added Medium Alt Build Medium Builds Race Town Town Alternate Builds 

6484 – Back B

Book 6000 – Page 4-5
Classic Town Idea Book Instructions Added Medium Alt Build Town 

Book 6000 – Page 4-5

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

6803 – Back A

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

6955 – Back B

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

6854 – Back C

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

6833 – 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

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

6155 – Back D

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

6077-2 – Back C

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

6970 – Back F

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

6848 – Back A

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

6940 – Back A

6941 – Inside A
ABCs Alternate Builds Blacktron Blacktron Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6941 – Inside A

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

Book 6000 – Page 80-81

1526 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

1526 – Back A

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

6542 – Back B

1974-4 – Back B
Alternate Builds Bonus/Value Pack Alternate Builds Futuron Futuron Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

1974-4 – Back B

6484 – Back D
Alternate Builds Classic Town Instructions Added Medium Alt Build Medium Builds Race Town Town Alternate Builds 

6484 – Back D

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

6506 – Back B

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

6981 – Back A

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

4883 – Instructions D

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

6929 – Back D

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

4704 – Back B

6938 – Back D
Alternate Builds Exploriens Exploriens Alternate Builds Instructions Added Medium Alt Build Medium Builds 

6938 – Back D

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

6716 – Back C

6844 – Back A
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6844 – Back A

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

4883 – Instructions C

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

Book 6000 – Page 26-27

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

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

6973 – Back B

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

6953 – Back D

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

6258 – Back A

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

6852 – Back A

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

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

6030 – Back A

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

886 – Back A

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

6683 – Back B

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

6685 – Back B

5581 – Back A
Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds 

5581 – Back A

Book 6000 – Page 50-51
Classic Town Idea Book Instructions Added Medium Alt Build Town 

Book 6000 – Page 50-51

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

6357 – Back A

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

6039 – Back A

6260 – Back A
Alternate Builds Instructions Added Pirates Pirates Alternate Builds Pirates I Small Alt Build Small Builds 

6260 – Back A

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

4705 – Back A

Book 6000 – Page 12-13
Classic Town Idea Book Instructions Added Medium Alt Build Town 

Book 6000 – Page 12-13

Book 7777 – Cover
Idea Book Instructions Added Race Town Train 

Book 7777 – Cover

Book 7777 – Page 8-9
Idea Book Instructions Added Large Alt Build Large Builds Race Town Train 

Book 7777 – Page 8-9

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

6354 – Back B

6844 – Back B
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Small Alt Build Small Builds Space 

6844 – Back B

Book 260 – Page 36-37
Extra Large Alt Build Extra Large Builds Idea Book Instructions Added Pirates Pirates Alternate Builds 

Book 260 – Page 36-37

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

6352 – Back C

6246 – Back B
Alternate Builds Instructions Added Islanders Pirates Pirates Alternate Builds Pirates I Small Alt Build Small Builds 

6246 – Back B

7043 – Back A
Alternate Builds Fire Instructions Added Small Alt Build Small Builds Town World City 

7043 – Back A

1732 – Back C
Alternate Builds Castle Castle Alternate Builds Dragon Knights Instructions Added Very Small Alt Build Very Small Builds 

1732 – Back C

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

1793 – Back C

6335 – Back E
Alternate Builds Classic Town Instructions Added Medium Alt Build Medium Builds Race Town Town Alternate Builds 

6335 – Back E

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

6664 – Back C

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

6810 – Back B

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

6841 – Back C

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

4883 – Instructions E

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

8675 – Back B

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

6955 – Back D

4593 – Instructions A
Alternate Builds Drome Racers Instructions Added Racers Racers Alternate Builds Small Alt Build Small Builds 

4593 – Instructions A

6815 – Back A
Alternate Builds Exploriens Exploriens Alternate Builds Instructions Added Space Very Small Alt Build Very Small Builds 

6815 – Back A

Book 250 – Page 44-45
Castle Castle Alternate Builds Extra Large Alt Build Idea Book Instructions Added 

Book 250 – Page 44-45

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

6970 – Back E

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

4883 – Instructions G

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

6512 – Back A

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

6951 – Back B

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

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

6048 – Back B

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

EXPLORE MORE OFFICIAL SETS

1912: Car (Set A, 1)
Basic Happy Meal McDonalds Official Sets Polybag Universal Building Set Very Small Builds 

1912: Car (Set A, 1)

April 1, 2025April 1, 2025 Master Builder

Year Released: 1984BricklinkInstructions

6087: Witch’s Magic Manor
Castle Castle Sets Fright Knights Large Builds Official Sets 

6087: Witch’s Magic Manor

July 8, 2022July 8, 2022 Master Builder
6986: Mission Commander
Bjarne Tveskov Extra Large Builds Official Sets Space Space Police I Space Police I Sets 

6986: Mission Commander

April 3, 2022July 29, 2023 Master Builder
6800 (6816, Kabaya: Space 2): Cyber Blaster
Official Sets Space UFO UFO Sets Very Small Builds 

6800 (6816, Kabaya: Space 2): Cyber Blaster

October 4, 2024February 25, 2025 Master Builder
6358: Snorkel Squad
Classic Town Fire Medium Builds Official Sets Town Town Sets 

6358: Snorkel Squad

April 15, 2021April 15, 2021 Master Builder
6551: Checkered Flag 500
Medium Builds Official Sets Town Town Sets 

6551: Checkered Flag 500

November 21, 2023November 21, 2023 Master Builder
6212: X-wing Fighter
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

6212: X-wing Fighter

February 1, 2024February 1, 2024 Master Builder
928 (497): Galaxy Explorer
ABCs Classic Space Classic Space Sets Different Box Versions Different Set Numbers Jens Nygaard Knudsen Large Builds LL Link Official Sets Space 

928 (497): Galaxy Explorer

November 24, 2020August 15, 2024 Master Builder
6386: Police Command Base
Box Marketing Blurb Classic Town Large Builds Official Sets Police Town Town Sets 

6386: Police Command Base

February 4, 2021April 3, 2024 Master Builder
6930: Space Supply Station
Classic Space Classic Space Sets Medium Builds Official Sets 

6930: Space Supply Station

September 13, 2019September 11, 2023 Master Builder
6598: Metro PD Station
Classic Town Extra Large Builds Official Sets Police Town Town Sets 

6598: Metro PD Station

January 6, 2022January 6, 2022 Master Builder
6820: Starfire I
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6820: Starfire I

January 12, 2021January 12, 2021 Master Builder
1974-4: Star Quest
Bonus/Value Pack Sets Futron Sets Futuron Official Sets Small Builds Space 

1974-4: Star Quest

September 7, 2023September 8, 2023 Master Builder
6825: Cosmic Comet
Classic Space Classic Space Sets Official Sets Small Builds 

6825: Cosmic Comet

September 12, 2019March 18, 2024 Master Builder
6180: Hydro Search Sub
Aquazone Aquazone Sets Box Story Hydronauts Large Builds Official Sets 

6180: Hydro Search Sub

February 18, 2025February 18, 2025 Master Builder
6783: Sonar Transmitting Cruiser
ABCs Classic Space Classic Space Sets Large Builds Official Sets Space 

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 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
  • Belville
  • Building Set with People
  • Castle
  • Duplo
  • Fabuland
  • Harry Potter
  • Holiday and Event
  • LEGOLAND
  • Model Team
  • Pirates
  • Space
  • Star Wars
  • Technic
  • 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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