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
- 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 Race Town Town Alternate Builds Very Small Builds

6503 – Back C

July 9, 2022July 9, 2022 Master Builder 2724 Views

From: 6503: Sprint Racer
Name: TBD
Submitted by: USER
Instructions

← 6503 – Back B
6861 – Back D →

You May Also Like

6930 – Inside B

March 3, 2022April 2, 2022 Master Builder

6236 – Back B

May 18, 2022May 23, 2022 Master Builder

1722: Rescue/Ice Planet Combo Pack

July 13, 2021April 4, 2024 Master Builder

6390 – Back E

February 10, 2023February 10, 2023 Master Builder

6712 – Back B

November 20, 2023November 29, 2023 Master Builder

Book 250 – Page 6-7

November 8, 2021November 11, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Duplo Duplo Sets Official Sets Playhouse Small Builds

2551: Grandma’s Kitchen

February 27, 2023February 27, 2023 Master Builder

Year Released: 1992Bricklink

Medium Builds Official Sets Space Unitron Unitron Sets

1787: Crater Cruiser

April 9, 2020July 18, 2020 Master Builder

Large Builds Model Team Model Team Sets Official Sets

5521: Sea Jet

January 12, 2021January 31, 2026 Master Builder

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 – Side R

January 22, 2021March 14, 2025 Master Builder

Gas Station Medium Builds Official Sets Town Town Jr Town Sets

6548: Octan Gas Station

October 12, 2021October 12, 2021 Master Builder

Classic Town Medium Builds Official Sets Police Town Town Sets

6430: Night Patroller

April 9, 2020February 4, 2021 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6667: Pothole Patcher

November 19, 2020November 19, 2020 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

Aquanauts Aquazone Aquazone Sets Jørn Thomsen Official Sets Very Small Builds

6125: Sea Sprint 9

April 9, 2020July 29, 2023 Master Builder

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

7301 (1413, 7309, Kabaya: Life On Mars 4): Rover

February 24, 2025February 25, 2025 Master Builder

Divers Medium Builds Official Sets Town Town Sets

6557: Treasure Hunters

December 29, 2021June 28, 2022 Master Builder

Blacktron II Blacktron II Alternate Builds Blacktron II Sets Jørn Thomsen Large Builds Official Sets Space Super Model

6861: Blacktron Super Model

July 29, 2023July 29, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1526: Unknown (Space Radar Buggy)

August 20, 2025August 29, 2025 Master Builder

Exo-Force Medium Builds Official Sets

8114: Chameleon Hunter

December 12, 2025January 6, 2026 Master Builder

Extra Large Builds Harry Potter Harry Potter Sets Official Sets Sorcerer's Stone

4709: Hogwarts Castle

April 16, 2021July 13, 2021 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6971: Inter-Galactic Command Base

September 12, 2019September 28, 2019 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
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.