Moomintroll: Winter's Warmth, the sequel to Snufkin: Melody of Moominvalley, is basically the perfect example of a cozy game.
It follows Moomintroll as he accidentally wakes from hibernation in the middle of winter and emerges into a snowy, unfamiliar world, where he must meet strange creatures and go on adventures in order to bring back spring. This story, familiar to generations of Moomin fans (and retold in basically every Moomin adaptation you can imagine), comes first from Moominland Midwinter, one of the original chapter books written by Tove Jansson.
