Very fun, Not for old people
The gameplay is very good, lots of action, violence, and there is some funny moments where you check the opposing captain into the wall and hear them scream. In my opinion I find it very easy to know what is going on with the exception of the occasional pile-up of 10 people in one spot. My family members on the other hand have complained that it is too confusing for them and they can't really play it. In some ways they are correct but I find it very easy to get the hang of and play.
The graphics are great, not much else I can say about them except that they're just great. They are very detailed and when you get hit by a bomb you can really see the grit on the player.
The sounds are pretty good, the music is different then I would expect from a Mario game but I find that to be good. The voices for the character are good but they could have been better. The sounds I love most are when you check the captains into the wall and hear them scream in pain, I just find that very funny especially for a soccer game that isn't really viewed as a contact sport but there are some things that do happen in it.
Anyway to sum up, I think this is very good game, a little under-rated, and Im glad that Nintendo is tring to expand an try different things rather than stay with platforms even though it has been a while since they had a good platformer on console. Also the reason I said the game is not for old people is because most of my family members that were complaining its too confusing are older than me.