Canyon is a duet game about resource management and unexpected solutions, set in a largely undescribed post-apocalypse. I haven't gotten to test it yet, but I'd like to.
It's really good. I played a test run. It wasn't supposed to be a solo RPG, but the way the ghoul acts seemed so perfect for scripting that I couldn't help but think of it as one.
A handful of discord messages, a hastily googled public domain stock photo, and an hour and a half in photoshop later, I turned it into a one-page solo game: