A side-effect from my stint to sea:

Cube can be thought of a set that you put together yourself. someone carefully constructs a stack a couple hundred cards that people will then draft as if it was a normal set. Surprising you haven't heard of it since it's picked up massive popularity over the past year or so.

I only started playing after I had been on the boat, and a short while before deployment.
Plus, I don't go to any gatherings with other random people, just mostly people I know from the boat.