This is the extended version of the cube that we built in the following Youtube series:
https://youtube.com/playlist?list=PLxlTom8ShUHEPMNzT6_BSqnNBbFL-o7Qq
You can find the original 360 card cube here:
https://cubecobra.com/cube/overview/1aai
This cube has 30 more cards, and had some upgrades compared to the original cube.
Check out the last episode of the Youtube series for how this came to be.