I don't think there is a word for it so you can either use tetherball or make a new word. Tether = Tjuder (from Tjudra) so Tjuderboll would be a literal translation, it doesn't really sound nice though and noone will have a clue what you're talking about so I'd suggest you use Tetherball and then explain the game.
And is "och" in swedish.
På svenska
"King" in Swedish is "kung".
Tetherball The Movie - 2010 was released on: USA: 2011
Suedoise is French for Swedish.
Equality is "jämlikhet" in Swedish.
"Goal" in Swedish is "mål".
Cup is kopp in Swedish.
Spaceship is rymdskepp in Swedish.
Judge is domare in Swedish.
Adventures is äventyr in Swedish.
Two is två in Swedish.