Tonight I played both
Night In The Woods supplementals. If you've not heard of it, NitW is a game that was funded on Kickstarter and currently being developed. They're using the tech to make free mini-games to flesh out the characters and universe, as well as a way to promote the game.
Supplemental #1 -
Longest Night - is a cute little mini-game with very simple mechanics but a fuckload of atmosphere. It's only about 10 minutes long, so check it out.
If you liked that, check out Supplemental #2 -
Lost Constellation - which is available for free or donation on Itch.IO. It's longer - I think I played it for about two hours - and is a very simple Adventure game. It's a bit slow at first, but it builds to a beautiful ending.