Game works well for the theme.
Really liked the idea, couldn't consistently magnet the ball, it almost always immediately threw it. Because the ball does drop in from the top, spamming throw at the top really brings it down to who times it better, or gets the luckier timing. I couldn't seem to catch a ball if it was thrown by the other player, which felt a little odd. I assume that was intentional, but I think it would have been neat to be able to catch the other players attacks.
Cool concept, if the magnet worked more consistently, it would solve some of the issue of spamming throw at the top I think, maybe separating the controls for magnet and throw to different keys would help.