Your Dead Friend (not to be confused with Dead Friend, which is also good) is a two-player game based on a Wendell Berry poem.
Specifically, it's a game about spending time with someone before they die. The death is quantum-locked, you can't prevent it, but you can change the quality of the time you spend before it happens.
The PDF is 3 pages, with a nice evocative layout and font choices that really complement the soft but intense tone of the game.
There aren't many mechanics, just some structure to a conversation, but the game doesn't need complicated dice and nothing feels missing.
Overall, if you want to feel sad, this will guide you to that experience. I don't want to feel sad, but I still think this is an excellent, well-written game with a powerful mood, and it's worth checking out if you're not worrying about the subject matter messing you up.