One By One is the absolute best game. It realises its theme with chilling, if subtle, efficiency. The saddle is a bit shoehorned, but it also adds to the creepy atmosphere of the game. Those developers are extremely good at conveying emotional punches with a subtlety rarely seen in most games.
Cold Comfort was a very good idea, but it was a bit short and lacking in execution. It did tug my heartstrings, so it gets a recommendation.