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 Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

6901 – Back D

August 28, 2023March 14, 2025 Master Builder 4073 Views

From: 6901: Mobile Lab
Name: Grabber Lab 1
Instructions: View PDF | Download .io File

Contributions

  1. Name, PDF and .io file submitted August 28, 2023 by: Mr.AstonishedRaccoon
  • ← 6901 – Back C
  • 854 – Front →

You May Also Like

1843: Space/Castle Value Pack

January 21, 2021September 13, 2023 Master Builder

3051 – Back A

October 26, 2026October 26, 2026 Master Builder

6022 – Back C

October 19, 2019October 28, 2021 Master Builder

6806 – Back A

April 16, 2021April 16, 2021 Master Builder

6573 – Back B

May 22, 2026May 22, 2026 Master Builder

6928 – Back B

June 26, 2022May 17, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

10182: Café Corner
Creator Expert Extra Large Builds Modular Buildings Collection Official Sets 

10182: Café Corner

January 23, 2024January 23, 2024 Master Builder

Year Released: 2007BricklinkInstructions

7106: Droid Escape
Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets 

7106: Droid Escape

March 1, 2023March 1, 2023 Master Builder
6135: Spy Shark
Aquashark Aquazone Aquazone Sets Official Sets Very Small Builds 

6135: Spy Shark

March 21, 2023March 21, 2023 Master Builder
6082: Fire Breathing Fortress
Castle Castle Sets Dragon Knights Large Builds Official Sets 

6082: Fire Breathing Fortress

January 13, 2022January 13, 2022 Master Builder
1966: Car Repair Shop
Classic Town Large Builds Official Sets Town Town Sets Traffic 

1966: Car Repair Shop

May 16, 2025May 16, 2025 Master Builder
6312: Straight Road Plates
Classic Town Official Sets Supplemental Town 

6312: Straight Road Plates

October 10, 2022October 10, 2022 Master Builder
6836: V-Wing Fighter
ABCs Official Sets Small Builds UFO UFO Sets 

6836: V-Wing Fighter

October 24, 2019March 22, 2025 Master Builder
7780: The Batboat: Hunt for Killer Croc
Batman I BATMAN™ BATMAN™ Sets Medium Builds Official Sets 

7780: The Batboat: Hunt for Killer Croc

March 27, 2026March 27, 2026 Master Builder
4591: Star Strike
Drome Racers Official Sets Racers Very Small Builds 

4591: Star Strike

February 21, 2025February 21, 2025 Master Builder
6277: Imperial Trading Post
Extra Large Builds Imperial Guards Official Sets Pirates Pirates I Pirates Sets 

6277: Imperial Trading Post

January 6, 2022January 6, 2022 Master Builder
6090: Royal Knight’s Castle
Castle Castle Sets Extra Large Builds Niels Milan Pedersen Official Sets Royal Knights 

6090: Royal Knight’s Castle

July 13, 2021July 29, 2023 Master Builder
6552: Rocky River Retreat
Classic Town Large Builds Official Sets Recreation Town Town Sets 

6552: Rocky River Retreat

July 15, 2022July 15, 2022 Master Builder
6125: Sea Sprint 9
Aquanauts Aquazone Aquazone Sets Jørn Thomsen Official Sets Very Small Builds 

6125: Sea Sprint 9

April 9, 2020July 29, 2023 Master Builder
7161: Gungan Sub
Large Builds Official Sets Star Wars Star Wars Sets 

7161: Gungan Sub

April 21, 2026April 21, 2026 Master Builder
6274: Caribbean Clipper
Box Story Imperial Soldiers Large Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets 

6274: Caribbean Clipper

February 8, 2022February 21, 2025 Master Builder
1843-2: {Spyrius Unknown}
Bonus/Value Pack Sets Official Sets Small Builds Space Spyrius Spyrius Sets 

1843-2: {Spyrius Unknown}

September 8, 2023September 13, 2023 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.