If you are at all a fan of games in the realm of Animal Crossing and/or Harvest Moon, this is an absolute must buy. Even if you've never played one of those games, Stardew Valley is a fantastic entry in the genre to get you started. You can't beat it for the price, especially if it is on sale. At the time of writing this review, it is currently on sale for $10.04 USD. In my opinion, you can't beat the value, charm, and fun you will get out of Stardew Valley at that price. A rare indie game that I would gladly pay a full AAA price for, yet you can get it for under $20 USD. Dive in and enjoy it!

EDIT (12/2/19): Still a favorite of mine over 3 years later.