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LEGO Alternate Builds!

  • SETS
    • Adventurers
    • Aquazone
    • Belville
    • Building Set with People
    • Castle
    • Duplo
    • Fabuland
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    • Holiday and Event
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    • Model Team
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  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Extra Large Alt Build

Classic Town Extra Large Alt Build Extra Large Builds Idea Book Instructions Added Town Town Alternate Builds 

Book 226 – Page 36-37

February 13, 2025February 20, 2025 Master Builder 3203 Views

From: Idea Book 226Year Released: 1981 Build 1: Wind Mill Instructions: View PDF | Download .io File Build 2: Large Factory Instructions: View PDF | Download .io

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Castle Castle Alternate Builds Classic Space Classic Space Alternate Builds Classic Town Extra Large Alt Build Idea Book Instructions Added Large Alt Build Medium Alt Build Space Town 

Book 200 – Page 50-51

May 1, 2024September 12, 2024 Master Builder 4510 Views

From: Idea Book 200Year Released: 1985 Build: Surface Explorer Instructions: View PDF | Download .io File Build: DJ Station Instructions: View PDF | Download .io File

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Alternate Builds Extra Large Alt Build Extra Large Builds Imperial Soldiers Instructions Added Pirates Pirates Alternate Builds Pirates I 

6276 – Back D

December 22, 2023January 1, 2024 Master Builder 3045 Views

From: 6276: Eldorado FortressName: Aggressive Negotiations Instructions: View PDF | Download .io File

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Harbor Instructions Added Town Town Alternate Builds 

6542 – Back G

December 22, 2023January 1, 2024 Master Builder 3390 Views

From: 6542: Launch & Load SeaportName: Seaport Dry Dock Instructions: View PDF | Download .io File

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Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added M:Tron M:Tron Alternate Builds 

6989 – Back C

November 29, 2023April 4, 2024 Master Builder 3374 Views

From: 6989: Mega Core MagnetizerName: M:Tron Superbike Instructions: View PDF | Download .io File

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Alternate Builds Extra Large Alt Build Extra Large Builds Imperial Soldiers Instructions Added Pirates Pirates Alternate Builds Pirates I 

6276 – Back C

November 21, 2023November 29, 2023 Master Builder 4481 Views

From: 6276: Eldorado FortressName: Eldorado Prison Break Instructions: View PDF | Download .io File

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Alternate Builds Extra Large Alt Build Extra Large Builds Imperial Soldiers Instructions Added Pirates Pirates Alternate Builds Pirates I 

6276 – Back B

October 5, 2023October 10, 2023 Master Builder 3709 Views

From: 6276: Eldorado FortressName: Eldorado Siege Instructions: View PDF | Download .io File

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Harbor Instructions Added Town Town Alternate Builds 

6542 – Back A

October 5, 2023October 10, 2023 Master Builder 4111 Views

From: 6542: Launch & Load SeaportName: Sea Monster Processing Hub Instructions: View PDF | Download .io File

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Alternate Builds Extra Large Alt Build Extra Large Builds Imperial Soldiers Instructions Added Pirates Pirates Alternate Builds Pirates I 

6276 – Back A

September 14, 2023September 18, 2023 Master Builder 3574 Views

From: 6276: Eldorado FortressName: Eldorado Customs Checkpoint Instructions: View PDF | Download .io File

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Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added M:Tron M:Tron Alternate Builds 

6989 – Back D

September 14, 2023April 4, 2024 Master Builder 3508 Views

From: 6989: Mega Core MagnetizerName: Mega Core Transport Vehicle Instructions: View PDF | Download .io File

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Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space Space Police I Space Police I Alternate Builds 

6986 – Back E

August 13, 2023August 15, 2023 Master Builder 3440 Views

From: 6986: Mission Commander Mission Squadron(From left to right) Name: Galactic Interceptor Instructions: View PDF Name: Auxiliary Perpetrator  Instructions: View PDF Name: Aerial Scout Instructions: View PDF

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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 3594 Views

From: 6986: Mission CommanderName: Moth Commander Instructions: View PDF

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Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space Space Police I Space Police I Alternate Builds 

6986 – Back A

June 3, 2023June 4, 2023 Master Builder 4728 Views

From: 6986: Mission CommanderName (Model Prison): Space Lock-Up Isolation Outpost Instructions: View PDF Name (Model Spaceship): Mission Striker Instructions: View

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Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space Space Police I Space Police I Alternate Builds 

6986 – Back D

April 21, 2023May 31, 2023 Master Builder 3552 Views

From: 6986: Mission CommanderName: Mission Overlord Instructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Inside A

February 10, 2023February 18, 2023 Master Builder 3041 Views

From: 6390: Main StreetName: Main Street Repair Shop Instructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Back G

February 10, 2023February 10, 2023 Master Builder 2776 Views

From: 6390: Main StreetName: Main Street Food Truck Square Instructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Back F

February 10, 2023February 10, 2023 Master Builder 2948 Views

From: 6390: Main StreetName: Main Street Shipping Depot Instructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Back E

February 10, 2023February 10, 2023 Master Builder 2886 Views

From: 6390: Main StreetName: Main Street Condos Instructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Back C

February 10, 2023February 10, 2023 Master Builder 2963 Views

From: 6390: Main StreetName: Main Street Diner Instructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Back B

February 10, 2023February 10, 2023 Master Builder 2582 Views

From: 6390: Main StreetName: Main Street Store Instructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Instructions Added Town Town Alternate Builds Traffic 

6390 – Back A

February 10, 2023February 10, 2023 Master Builder 2901 Views

From: 6390: Main StreetName: Legoland Hotel Instructions: View PDF

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ABCs Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added M:Tron M:Tron Alternate Builds 

6989 – Back A

January 9, 2023April 4, 2024 Master Builder 4936 Views

From: 6989: Mega Core MagnetizerName: Mega Core Mining Unit Instructions: View PDF | Download .io File *Alternate Build Connection: 1980 Medium US Assortment

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Alternate Builds Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6080 – Inside A

December 16, 2022December 20, 2022 Master Builder 5140 Views

From: 6080: King’s CastleName:Instructions: View PDF

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Alternate Builds Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

375 – Inside B

December 16, 2022September 12, 2023 Master Builder 3704 Views

From: 375 (6075): CastleName: TBDInstructions: View PDF

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Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Harbor Instructions Added Town Town Alternate Builds 

6541 – Back A

November 9, 2022November 14, 2022 Master Builder 2980 Views

From: 6541: Intercoastal SeaportName: Deep Sea Cargo Hub Instructions: View PDF | Download .io File

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Alternate Builds Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6080 – Back A

October 2, 2022December 20, 2022 Master Builder 9276 Views

From: 6080: King’s CastleName: Instructions: View PDF

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Classic Town Extra Large Alt Build Idea Book Instructions Added Town 

Book 6000 – Page 44-45

September 5, 2022September 20, 2022 Master Builder 4026 Views

From: Idea Book 6000Year Released: 1980 Build 1: Follow CarInstructions: Included on Page Build 2: Hanger Instructions: View PDF | Download .io File

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ABCs Alternate Builds Blacktron Blacktron Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6987 – Back B

March 29, 2022August 15, 2023 Master Builder 7155 Views

From: 6987: Message Intercept BaseName: Message Transporting Vessel Instructions: View PDF | Download .io File *Alternate Build Connection: 928 – Back A, 6932:

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Alternate Builds Blacktron Blacktron Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6987 – Back D

February 24, 2022March 17, 2022 Master Builder 4331 Views

From: 6987: Message Intercept BaseName: Message Debugging Unit Instructions: View PDF | Download .io File

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Alternate Builds Blacktron Blacktron Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6987 – Back A

January 31, 2022February 1, 2022 Master Builder 4454 Views

From: 6987: Message Intercept BaseName: Message Processing Hub Instructions: View PDF | Download .io File

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Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Idea Book Instructions Added 

Book 260 – Page 34-35

November 8, 2021August 1, 2023 Master Builder 5584 Views

From: Idea Book 260Year Released: 1990 Build 1: The Village – Farmhouse Instructions: View PDF Build 2: The Village – Procession

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Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Idea Book Instructions Added 

Book 260 – Page 32-33

November 8, 2021August 1, 2023 Master Builder 6070 Views

From: Idea Book 260Year Released: 1990 Page Build: War of the Two Houses Instructions: View PDF

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Castle Castle Alternate Builds Extra Large Alt Build Idea Book Instructions Added 

Book 250 – Page 48-49

November 8, 2021August 1, 2023 Master Builder 4884 Views

From: Idea Book 250Year Released: 1987 Build 1: Lion Knight’s Siege – Main Keep Instructions: View PDF Build 2: Lion Knight’s Siege –

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Castle Castle Alternate Builds Extra Large Alt Build Idea Book Instructions Added 

Book 250 – Page 44-45

November 8, 2021August 1, 2023 Master Builder 6624 Views

From: Idea Book 250Year Released: 1987 Build 1: Sawmill Instructions: View PDF Build 2: Treadwheel Crane Instructions: View PDF Build 3: Castle Entrance Instructions: View PDF

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Extra Large Alt Build Extra Large Builds Idea Book Instructions Added Pirates Pirates Alternate Builds 

Book 260 – Page 36-37

November 1, 2021August 1, 2023 Master Builder 6361 Views

From: Idea Book 260Year Released: 1990 Build 1: Bluecoat Fortress Assault – Fortress Instructions: View PDF Build 2: Bluecoat Fortress Assault –

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Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Idea Book Instructions Added 

Book 260 – Page 28-29

November 1, 2021August 1, 2023 Master Builder 8072 Views

From: Idea Book 260Year Released: 1990 Build 1: Main Keep Instructions: View PDF Build 2: Barracks Instructions: View PDF Build 3: Waterfront Instructions: View

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6086 – Back B

October 11, 2021October 28, 2021 Master Builder 5174 Views

From: 6086: Black Knight’s CastleName: Black Knight’s Lookout Fortification Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6086 – Back A

October 11, 2021October 28, 2021 Master Builder 4875 Views

From: 6086: Black Knight’s CastleName: Black Monarch’s Summer Retreat Keep Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6086 – Inside B

October 11, 2021October 28, 2021 Master Builder 5401 Views

From: 6086: Black Knight’s CastleName: Black Knight’s Village Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6086 – Inside A

October 11, 2021October 28, 2021 Master Builder 5780 Views

From: 6086: Black Knight’s CastleName: Black Knight’s Stronghold Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6085 – Inside B

July 13, 2021October 28, 2021 Master Builder 3760 Views

From: 6085: Black Monarch’s CastleName: Black Knight’s Siege Beast Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6085 – Inside A

July 13, 2021January 28, 2022 Master Builder 5051 Views

From: 6085: Black Monarch’s CastleName: Black Knight’s Prison Tower Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6085 – Back C

July 13, 2021October 28, 2021 Master Builder 5278 Views

From: 6085: Black Monarch’s CastleName: Black Knight’s River Crossing Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6085 – Back B

July 13, 2021October 28, 2021 Master Builder 5362 Views

From: 6085: Black Monarch’s CastleName: Black Knight’s Joustling Grounds Instructions: View PDF

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Alternate Builds Black Knights Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6085 – Back A

July 13, 2021October 28, 2021 Master Builder 5713 Views

From: 6085: Black Monarch’s CastleName: Black Monarch’s Flagship Instructions: View PDF

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Alternate Builds Extra Large Alt Build Extra Large Builds Futuron Futuron Alternate Builds Instructions Added Space 

6990 – Back B

August 30, 2020March 10, 2025 Master Builder 4051 Views

From: 6990: Futuron Monorail Transport SystemName: Monorail Surveyor System and Rail Runner Instructions: View PDF | Download .io File

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Alternate Builds Castle Castle Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added 

6080 – Back C

October 5, 2019October 25, 2021 Master Builder 6939 Views

From: 6080: King’s CastleName: King’s Guarding GroundsSubmitted by: matt_0937Instructions: View PDF | Download .io File

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Alternate Builds Classic Space Classic Space Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6985 – Back E

September 28, 2019May 19, 2023 Master Builder 4973 Views

From: 6985: Cosmic Fleet VoyagerName: Cosmic Fleet Flagship Instructions: PDF (Photo Sequence)

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Alternate Builds Classic Space Classic Space Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6985 – Back D

September 28, 2019November 18, 2021 Master Builder 4980 ViewsExtra Large Alt Build

From: 6985: Cosmic Fleet VoyagerName: Cosmic Fleet Starbase Instructions: PDF (Photo Sequence)

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Alternate Builds Classic Space Classic Space Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6985 – Back B

September 28, 2019November 18, 2021 Master Builder 4251 Views

From: 6985: Cosmic Fleet VoyagerName: Cosmic Fleet Discovery Jet Instructions: PDF (Photo Sequence)

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Alternate Builds Classic Space Classic Space Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6985 – Inside B

September 28, 2019November 18, 2021 Master Builder 3924 Views

From: 6985: Cosmic Fleet VoyagerName: Cosmic Fleet Surface Research Lab Instructions: PDF (Photo Sequence)

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ABCs Alternate Builds Classic Space Classic Space Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6985 – Inside A

September 28, 2019August 16, 2023 Master Builder 6090 Views

From: 6985: Cosmic Fleet VoyagerName: Cosmic Fleet Dragon Instructions: PDF (Photo Sequence) *Alternate Build Connection: 1987 Town, Castle, and Classic

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Alternate Builds Classic Space Classic Space Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added Space 

6985 – Back A

September 28, 2019November 18, 2021 Master Builder 4835 Views

From: 6985: Cosmic Fleet VoyagerName: Cosmic Fleet Explorer Instructions: PDF (Photo Sequence)

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EXPLORE MORE OFFICIAL SETS

6765: Gold City Junction
Jørn Thomsen Large Builds Official Sets Western Western Sets 

6765: Gold City Junction

November 10, 2019July 29, 2023 Master Builder

Year Released: 1996Designer: Jørn ThomsenBricklinkInstructions

6080: King’s Castle
ABCs Castle Castle Sets Extra Large Builds Lion Knights Niels Milan Pedersen Official Sets 

6080: King’s Castle

October 5, 2019August 16, 2023 Master Builder
6872: Xenon X-Craft
Classic Space Classic Space Sets Official Sets Small Builds 

6872: Xenon X-Craft

October 19, 2019October 19, 2019 Master Builder
6818: Cyborg Scout
Official Sets Small Builds Space UFO UFO Sets 

6818: Cyborg Scout

July 18, 2022July 18, 2022 Master Builder
1096: Race Buggy
Classic Town Official Sets Race Town Town Sets Very Small Builds 

1096: Race Buggy

July 26, 2020July 26, 2020 Master Builder
6350: Pizza To Go
Classic Town Food and Drink Medium Builds Official Sets Town Town Sets 

6350: Pizza To Go

April 9, 2020February 3, 2021 Master Builder
6932: Stardefender 200
ABCs Futron Sets Futuron Large Builds Official Sets Space 

6932: Stardefender 200

September 24, 2019August 15, 2023 Master Builder
4766: Graveyard Duel
Extra Large Builds Goblet of Fire Harry Potter Harry Potter Sets Official Sets 

4766: Graveyard Duel

May 16, 2023May 16, 2023 Master Builder
6880: Surface Explorer
Classic Space Classic Space Sets Official Sets Small Builds Space 

6880: Surface Explorer

May 4, 2020May 4, 2020 Master Builder
2333: Animal
Basic Set Duplo Duplo Sets Official Sets Very Small Builds 

2333: Animal

May 16, 2023May 16, 2023 Master Builder
5956: Expedition Balloon
Adventurers Adventurers Sets Jungle Medium Builds Official Sets 

5956: Expedition Balloon

August 31, 2024August 31, 2024 Master Builder
3676: Catherine Cat’s Fun Park
Box Story Fabuland Fabuland Sets Official Sets Small Builds 

3676: Catherine Cat’s Fun Park

March 1, 2025March 1, 2025 Master Builder
6046: Hemlock Stronghold
Castle Castle Sets Dark Forest Medium Builds Official Sets 

6046: Hemlock Stronghold

November 18, 2021November 18, 2021 Master Builder
6832: Super Nova II
Blacktron II Blacktron II Sets Official Sets Very Small Builds 

6832: Super Nova II

October 5, 2019October 5, 2019 Master Builder
1843-3: {Royal Knights Unknown}
Bonus/Value Pack Sets Castle Castle Sets Official Sets Royal Knights Small Builds 

1843-3: {Royal Knights Unknown}

September 8, 2023September 13, 2023 Master Builder
7194: Yoda – UCS
Episode IV/V/VI Extra Large Builds Official Sets Sculptures Star Wars Star Wars Sets Ultimate Collector Series 

7194: Yoda – UCS

March 10, 2025March 10, 2025 Master Builder

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About This Site

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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
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  • 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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