It's called Abnormal Things and you can download it here: http://orioncanning.blogspot.com/2017/06/abnormal-things.html
The basic premise is you are all people living in a small town and a creature is abducting people you care about, so you have to work together to try to stop it. It's kind of high stakes in that it's fairly likely that bad things will happen to people in the game. The game is GMless and on the rules light and freeform end of things, but the conflict is pushed along by a solid mechanic that builds up tension as it ramps towards a conclusion. You take turns playing as the horror, doing your best to creep each other out. I've playtested it a bunch and I think it does a really good job of doing the Stranger Things thing. Check it out, it's free. And please share and let me know what you think.
I hope people who like the game check out the original game it's based on, Abnormal by Avery Alder. Most of the rules are directly borrowed from Abnormal, so Avery deserves most of the credit for allowing me to use their game. https://www.patreon.com/posts/abnormal-619932