Unfortunately, I had high expectations from this particular game as I was expecting something similar to the Mario Party experience, but I was completely disappointed! Although it has very nice graphics (like all the new Mario games), it seems to not utilize the Joycon motion controls properly. In most games, it requires almost the same hand movement and becomes extremely tiring at some point during the fun. The duration of the games is very short and there is also no tournament that local players can create when playing multiplayer. You choose each individual sport, play for 3-4 minutes, and that's it. The steep price of 50Euros is in no way justified. I believe that Sega did not properly utilize the joy-cons at all, and personally, I noticed a great "laziness" in their use. The two stars are only for the nice graphics.

I bought it for 37 euros brand new. It's worth it at that price.
It's a nice game to play with friends and online. But the online mode of SEGA is not that good in this game, you won't easily find opponents in online ranked matches.

The easiest way to play online is to go to the "free match" option, then "gather and play". If you don't find rooms from others, create your own. Invite up to 4 people worldwide, and within the next 2 minutes, at least one person will join.
Playing online is fun, but it's limited to 4 people, even though the official statement says up to 8, but it's probably for local play

Beautiful game with nice graphics, quite entertaining to play with friends or with your children... on the downside... some sports are quite difficult to handle and you get bored quickly... also, the price, very expensive at €50 including shipping.