Calling All Maniacs!

In the 1970s, 80s, and 90s there were pictures of additional builds on the back of LEGO® boxes. There was a note that said you could build any of those exciting models with that set. There were no instructions, until now.

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How you can help:

This project is open to anyone in the community, you don’t have to be able to do everything and making instructions can be a daunting task. If you have an old box or are a collector and have lots of amazing old boxes, we’d love to have photos of them to include on this site. If you have or can take a better photo of a box, we’d gladly swap it out on our site. If you’re a master builder, we’d love your help! Email your back of the box building instructions to masterbuilder@backoftheboxbuilds.com. If you build it, you get to name it. Anything anyone can do to make this resource better is welcome!

Thanks to everyone for your help with photos and builds to get this project started!

About our naming system:

The pictures of additional builds on the back of the boxes we’ve named primary following left to right Set # – Back A, B, C… For the bigger boxes with a front cover flap that opens those builds are named Set # – Inside A, B, C…  If there’s a minifig holding a tool (typically no plate bricks) those figures can be found on our Minifigs page, and not giving a letter build associated with it (Simply labeled Set # – Minifig). Additionally, the sides of the boxes sometimes have builds as well and are usually another angle of one of the back of the box builds. (These can obviously be extremely helpful when trying to build!) In some cases though the picture on the side of the box is a unique build. Those builds on the side of the box are named Set # – Side L or R, for left or right side when looking at the front of the box. If the box has a unique build on the top or bottom of the box those will be labeled Set # – Bottom or Top. (Haven’t seen that yet, but lots of boxes out there!)

About our build size categories:

Under 35 pieces – Very Small

Under 100 pieces – Small

Under 200 pieces – Medium

Under 400 pieces – Large

400+ pieces – Extra Large

Thanks for checking this project out and happy building!