I'm surprised that a lot of people say Mario Party 4. The first one I played was Mario Party 5 so I may be a bit biased but to me it seems that Mario Party 5 is better than 4 in every way. Mario Party 4 feels like a GameCube adaptation of the 64 games (I think this is also what they were going for because the early boxart showed the characters with their 64 era designs). I'm not sure if that's a good thing, everything in that game feels extremely slow and it looks a bit rough visually too.