Has anyone ever played it?
It seems like it would be a good uni game as there is no tackling or special skills required and it’s great fun without being too challenging.
Maybe some club somewhere would be willing to try it out and post the results here if they like.
Typically, sports which require fast reactions to balls hit by opponents don’t work well on unicycles. It’s just too easy to hit it where your opponent can’t get to it. (Tennis, ping pong, volleyball fall into this category).
Hitting the ball is certainly possible, and if you wanted to cooperate on keeping it alive you might have some fun.
We play a fun game that we call uni ball. To score a point a team mate must catch the ball at the end of the court in a small area. The pass must come from outside the small area. If an opponent tags you while you have the ball, they get possession of the ball. The other team has a scoring box at the opposite end of the court. We usually play to 10 points per game. Here is a clip of some playing: