Surprisingly very good, especially for what it is! Mario Tennis on the N64 is one of my favorite sports games, and they did a great job making this one feel very similar.

The RPG story mode is very cute, but it's always very jarring seeing Mario characters alongside "normal people."

Extra points because it's very funny that Waluigi is in the base roster and Wario isn't. I have no idea if Wario is unlockable. That's fine.