What is the best example of an immersive game that you can think of? There are a few that I could list, but I just finished playing Penumbra: Overture, and I scared the hell out of myself so I'd say it was pretty immersive.
EDIT: My experience with Penumbra: http://www.youtube.com/watch?v=2QU6hDXBo1E
EDIT: My experience with Penumbra: http://www.youtube.com/watch?v=2QU6hDXBo1E