#14
IMSCARED is a historical artifact that still works. The meta-horror trick of bleeding out of the game window and onto your desktop sounds gimmicky until it actually happens and you realize your pulse went up. It is short, rough around the edges by modern standards, and absolutely not the most sophisticated game on this list. But for players curious about how indie horror learned to break the fourth wall, it is the clearest example of where that tradition started. Worth an evening for the curiosity factor alone.