It wasn't enough that Might & Delight made a beautiful game about being a badger caring for her cubs. Now they've released a free add-on. Once a day for a month, find food for your cubs. Or they will die.
I love this not only because it's a free addition to a game I already like, but it fits in well with other great daily games like Vesper.5 and the Spelunky daily challenge. And Cookie Clicker. I tried out Nurture and you can see how simply the gameplay starts out:
Nurture comes free with Shelter, which you can pick up on Steam or directly from the developers along with Pid for $US15.