There's farming and fishing, tons to collect and craft and upgrade, there's dungeons, there's relationships and rare items, and variety of play in the seasons and festivals... But for me, my favorite thing is just how damn charming it all is. The soundtrack is great and atmospheric, even the sound effect of just chopping down a tree is so perfect and satisfying. And IMO, there's no game that's a better example of "play at your own pace". It's pretty cheap and appeals to such a wide variety of gamers... So give it a try!