Stardew Valley
I've had this game for a long time, and up until yesterday, I didn't really see the draw or why this game was so good. I played for a few hours straight yesterday and now I can definitely see the appeal. I used to play Harvest Moon when I was younger, and this game certainly fills that need for farm management and whatever else. It's got a lot of depth for it being made and managed by one person. Certainly worth picking up if you want a nice relaxing alternative to Harvest Moon.