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
Alternate Builds Robo Force Robo Force Alternate Builds Small Builds Space 

2151 – Back A

January 14, 2021January 14, 2021 Master Builder 3691 Views

From: 2151: Robo Raider
Name: TBD
Submitted by: USER
Instructions

  • ← 2151: Robo Raider
  • 2151 – Back C →

You May Also Like

6018 – Back A

October 5, 2019September 24, 2024 Master Builder

6211 – Back A

February 9, 2025February 13, 2025 Master Builder

6086 – Back B

October 11, 2021October 28, 2021 Master Builder

4554 – Back A

August 10, 2026August 10, 2026 Master Builder

6817: Beta Buzzer

June 1, 2022March 22, 2025 Master Builder

6250 – Back C

February 20, 2025February 20, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

735: Basic Building Set
Basic Extra Large Builds Official Sets Universal Building Set 

735: Basic Building Set

September 15, 2022September 15, 2022 Master Builder

Year Released: 1990BricklinkInstructions

5830: Fun-Day Sundaes
Belville Belville Sets Lion Knights Official Sets Recreation Very Small Builds 

5830: Fun-Day Sundaes

April 19, 2021April 19, 2021 Master Builder
6933: Spectral Starguider
Blacktron II Blacktron II Sets Jørn Thomsen Medium Builds Official Sets Space 

6933: Spectral Starguider

April 13, 2020February 11, 2025 Master Builder
6988: Alpha Centauri Outpost
Blacktron II Blacktron II Sets Large Builds Official Sets 

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 Master Builder
6613: Telephone Booth
Classic Town Official Sets Town Town Sets Traffic Very Small Builds 

6613: Telephone Booth

November 6, 2024November 6, 2024 Master Builder
6811: Pulsar Charger
M:Tron M:Tron Sets Official Sets Space Very Small Builds 

6811: Pulsar Charger

April 17, 2020April 17, 2020 Master Builder
6270: Forbidden Island
Box Story Medium Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets 

6270: Forbidden Island

April 4, 2022February 21, 2025 Master Builder
5978: Sphinx Secret Surprise
Adventurers Adventurers Sets Desert Large Builds Official Sets 

5978: Sphinx Secret Surprise

October 28, 2019April 4, 2020 Master Builder
6067: Guarded Inn
Castle Castle Sets Daniel August Krentz Large Builds Lion Knights Official Sets 

6067: Guarded Inn

February 9, 2021July 29, 2023 Master Builder
1371: Spinosaurus Attack Studio
Jurassic Park III Medium Builds Official Sets Studio Alternate Builds Studio Sets Studios 

1371: Spinosaurus Attack Studio

January 6, 2022June 4, 2024 Master Builder
1795 – Side R
Bonus/Value Packs Imperial Guards Official Sets Pirates Pirates Alternate Builds Pirates I Small Builds 

1795 – Side R

March 30, 2026March 30, 2026 Master Builder
6285: Black Seas Barracuda
Box Story Extra Large Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets 

6285: Black Seas Barracuda

August 3, 2023February 20, 2025 Master Builder
6077: Knight’s Procession
Castle Castle Sets Classic Castle Official Sets Very Small Builds 

6077: Knight’s Procession

July 13, 2021July 13, 2021 Master Builder
6737: Wake Rider (Wave Catcher)
Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets 

6737: Wake Rider (Wave Catcher)

April 7, 2026April 7, 2026 Master Builder
1843 – Bottom
Bonus/Value Pack Alternate Builds Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Alternate Builds 

1843 – Bottom

January 22, 2021March 14, 2025 Master Builder
7204: Jedi Defense II
Episode I Official Sets Star Wars Star Wars Sets Very Small Builds 

7204: Jedi Defense II

June 27, 2022June 27, 2022 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.