I let out a chuckle when I received the jersey. What a fun time! Great concept!
Some UX feedback:
- The stick figure is hard to see since it doesn't contrast with its background, I didn't notice it at first.
- I didn't understand what "hold = heavy gravity" meant for a while but I eventually caught on, I wonder if phrasing like "hold = slam dunk" would be clearer. For some reason, my idiot brain thought holding would make the basketball go up higher. That may have just been my confusion though.