It's great fun its own Mii-WG with a variety of characters to fill in between stop by every now and then to help to friends or relations to them, resolve disputes, to feed them, clothe, play games with them in the WarioWare style , etc. It is one of those chilled out with no fixed destination and without any pressure games, you can play it theoretically infinitely long.
Over time, more and more buildings and attractions open on the island and the offer in the shops is increasing. Also found at certain times of certain events in the game take place, for example, the entertaining Tomodachi Quest mini-game or funny rap battle duel. There is almost always something to do and to smile, but you should not play too long at a stretch, because otherwise the most or it does not happen a lot on the island again. Controlled by the way only by touch screen and only indirectly, by clicking something pulls, wipes etc.
One should in this game just do not make the mistake of an Animal Crossing or to expect so, it is as already mentioned a somewhat more extensive Tamagotchi-like game for in between with feel-good guarantee. Ideal to go to bridge waiting times.