First-person thought-provoker The Stanley Parable will hit Steam on Oct. 17. It's a difficult experience to describe unless you've played the original Source mod, so thankfully developer Galactic Cafe has made a spoiler-free demo available on Steam, as well.
Spoiler-free demo? But that means it has nothing to do with the actual game, which is all about narration and exploration, right? That depends on your definition of the term "demo." Either way, it's "meant simply to help you understand the style and tone of the full game without giving away any of its secrets," according to Galactic Cafe.
Give it a try yourself, so you don't end up like this guy.