You start this game in a room. Doesn't matter where you are, but what you are. You don't know if you're crawling or standing, or even if you really exists. In matter of fact, you know nothing but how to survive, think and maybe speak. You don't have a purpose, but to find out what and who you are... and if that matters.
I was confused at first, but the longer I played, the more I realized what was happening. I have never commented on one of these before, but I felt this truly deserved one. Simple, but a really good game. The ending actually made me think for a moment before choosing.