A Short Hike, a Humble Original recently released on Steam in an expanded version, is well worth a look, if anyone is in the mood for a "chill game", to break a bit from all the usual shooting and slashing that most games provide.
The game has some similarities in terms of visual presentation to the Nintendo DS game Animal Crossing: Wild World, and a very cool, and relaxing soundtrack.
It places you on an open world island that you are free to explore, inhabited by a colourful cast of characters, with some mini-games (fishing, collecting stuff, a game similar to beach volleyball, and more) to offer some gameplay variation.
It's possible to complete it in less time (although, considering the kind of game, it seems a bit pointless to just rush and ignore most things), but so far I have played for around 3 hours, and I only unlocked half of the achievements, so I think one can easily get 4-6 hours, at least, out of it, if you don't rush it.