Skip to content

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
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Small Alt Build Small Builds Space

6877 – Back B

June 7, 2021January 6, 2025 Master Builder 5450 Views

From: 6877: Vector Detector
Name: Determinator ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on November 16, 2021 by: IceAge2002

← 6877 – Back A
6877 – Back C →

You May Also Like

6646 – Back C

March 16, 2022March 16, 2022 Master Builder

6506 – Back A

November 22, 2025November 25, 2025 Master Builder

10182 – Back A

January 23, 2024January 28, 2025 Master Builder

6835 – Back B

November 9, 2019December 27, 2021 Master Builder

6034 – Back B

January 16, 2022January 16, 2022 Master Builder

6557 – Back D

December 29, 2021December 29, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Aquazone Aquazone Sets Box Story Hydronauts Large Builds Official Sets

6180: Hydro Search Sub

February 18, 2025February 18, 2025 Master Builder

Year Released: 1998BricklinkInstructions The box reads, “These underwater heroes search the sea for the powerful Hydrolator crystal. But watch out – Enemy

Basic Large Builds Official Sets Universal Building Set

535: Basic Building Set Tote Pack

May 15, 2023May 16, 2023 Master Builder

Airport Classic Town Large Builds Official Sets Town Town Sets

1687: Midnight Transport

January 25, 2022January 25, 2022 Master Builder

Castle Castle Sets Dark Forest Official Sets Small Builds

6024: Bandit Ambush

April 16, 2021April 16, 2021 Master Builder

Adventurers Adventurers Sets Box Story Official Sets Orient Expedition Small Builds

7411: Tygurah’s Roar

December 16, 2025December 16, 2025 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets Space Super Model

1593: Super Model

February 3, 2021March 18, 2024 Master Builder

Life on Mars Life on Mars Sets Official Sets Polybag Space Very Small Builds

1195: Alien Encounter Polybag

August 5, 2023August 5, 2023 Master Builder

Box Story Fabuland Fabuland Sets Official Sets Small Builds

3676: Catherine Cat’s Fun Park

March 1, 2025March 1, 2025 Master Builder

ABCs Classic Town Fire Official Sets Small Builds Town Town Sets

6685: Fire Copter 1

October 13, 2021August 3, 2023 Master Builder

Box Plus Classic Space Classic Space Sets Jens Nygaard Knudsen LL Link Official Sets Playscape/Play Stage Box Small Builds Space

918: Space Transport

April 27, 2020January 6, 2026 Master Builder

Medium Builds Official Sets Town Town Sets

6551: Checkered Flag 500

November 21, 2023November 21, 2023 Master Builder

Imperial Armada Official Sets Pirates Pirates Sets Small Builds

6244: Armada Sentry

November 16, 2019April 4, 2020 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6593: Blaze Battler

November 19, 2020November 19, 2020 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6844: Seismologic Vehicle (Sismobile)

October 22, 2019September 10, 2023 Master Builder

Large Builds Launch Command Official Sets Town Town Sets

6544: Shuttle Transcon 2

July 20, 2022July 20, 2022 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6358: Snorkel Squad

April 15, 2021April 15, 2021 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

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.