Firewatch (PC) GOG.COM Key

Firewatch is a single-player first-person mystery set in the Wyoming wilderness. 

The year is 1989. You are a man named Henry who has retreated from his messy life to work as afire lookout in the Wyoming wilderness. Perched high atop a mountain, it’s your job to look for smoke and keep the wilderness safe. An especially hot, dry summer has everyone on edge. Your supervisor, a woman named Delilah, is available to you at all times over a small, handheld radio—your only contact with the world you've left behind. But when something strange draws you out of your lookout tower and into the world, you’ll explore a wild and unknown environment, facing questions and making choices that can build or destroy the only meaningful relationship you have. 

A Note: Firewatch is a video game about adults having adult conversations about adult things. If you plan on playing with a younger gamer, that might be good to know going in.