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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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    • Universal Building Set
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  • USEFUL LINKS
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    • How BOTBB was Built
  • 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 3250 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 4570 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 3087 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 3444 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 3419 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 4536 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 3757 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 4163 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 3626 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 3544 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 3465 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 3620 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 4756 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 3595 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 3083 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 2808 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 3002 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 2934 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 2998 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 2610 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 2946 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, 2023June 23, 2025 Master Builder 5010 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 5172 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 3749 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 3010 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 9366 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 4059 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 7208 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 4375 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 4504 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 5642 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 6140 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 4953 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 6668 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 6420 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 8177 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 5237 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 4937 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 5462 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 5843 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 3808 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 5108 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 5344 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 5421 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 5814 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 4097 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 6990 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 5019 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 5012 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 4271 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 3957 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 6118 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 4860 Views

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

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EXPLORE MORE OFFICIAL SETS

4920: Rapid Rider
Official Sets Rock Raiders Rock Raiders Sets Very Small Builds 

4920: Rapid Rider

March 1, 2023March 1, 2023 Master Builder

Year Released: 1999BricklinkInstructions

885: Space Scooter
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

885: Space Scooter

January 27, 2024January 27, 2024 Master Builder
6503: Sprint Racer
Official Sets Race Town Town Sets Very Small Builds 

6503: Sprint Racer

July 9, 2022July 9, 2022 Master Builder
1476: 5 Set Bonus Pack
Bonus/Value Pack Sets Bonus/Value Packs Official Sets Small Builds 

1476: 5 Set Bonus Pack

July 22, 2024October 2, 2024 Master Builder
6398: Central Precinct HQ
Box Story Classic Town Extra Large Builds Official Sets Police Town Town Sets 

6398: Central Precinct HQ

February 19, 2025February 19, 2025 Master Builder
6806: Surface Hopper
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6806: Surface Hopper

April 16, 2021April 16, 2021 Master Builder
6837: Cosmic Creeper (Mantis Scavenger)
ABCs Insectoids Insectoids Sets Official Sets Small Builds 

6837: Cosmic Creeper (Mantis Scavenger)

April 2, 2020March 22, 2025 Master Builder
6035: Castle Guard
Black Falcons Castle Castle Sets Official Sets Small Builds 

6035: Castle Guard

December 27, 2021December 27, 2021 Master Builder
7126: Battle Droid Carrier
Episode I Official Sets Small Builds Star Wars Star Wars Sets 

7126: Battle Droid Carrier

July 26, 2023July 26, 2023 Master Builder
6041: Armor Shop
Castle Castle Sets Lion Knights Medium Builds Official Sets 

6041: Armor Shop

September 25, 2024September 25, 2024 Master Builder
1875: Meteor Monitor
Blacktron Blacktron Sets Bonus/Value Pack Sets LL Link Official Sets Very Small Builds 

1875: Meteor Monitor

July 14, 2021October 16, 2024 Master Builder
6957: Solar Snooper
ABCs Box Story Jørn Thomsen Large Builds Official Sets Space Space Police II Space Police II Sets 

6957: Solar Snooper

March 18, 2022February 18, 2025 Master Builder
7166: Imperial Shuttle
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

7166: Imperial Shuttle

April 16, 2021September 4, 2023 Master Builder
1694: Galactic Scout
Blacktron II Blacktron II Sets Official Sets Space Very Small Builds 

1694: Galactic Scout

February 9, 2021February 9, 2021 Master Builder
2586: King & Throne (Chess King)
Castle Castle Sets Official Sets Very Small Builds 

2586: King & Throne (Chess King)

January 29, 2021January 29, 2021 Master Builder
1626: Angel Polybag
Holiday and Event Holiday and Event Sets Official Sets Very Small Builds 

1626: Angel Polybag

March 4, 2023March 4, 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

In Honor of 1526

The classic space set that never was.

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