It's fun up to level 30. After level 30 you can't play in the lower tier so u end up getting paired with other players that are 30-70 levels ahead of you. So you can either play to level 30 and quit or dump a bunch of money into it to boost all your player. And if you've actually played the sport of basketball before, you may find it frustrating because there are a lot of ego maniacs that will not pass the ball (even when triple teamed).
I've sent email to Joycity to request 3 tiers, instead of just two, but who knows. They may be shutting the game down so don't go crazy if u do spend.