Illusions to Send Shivers Down Gamers Spines

You are playing a video game, and your avatar is creeping into a haunted house at the dead of night.

Suddenly, you freeze in your chair. Something is crawling up your back...

Source:
http://www.newscientist.com/article/mg21028137.900-illusions-to-send-shivers-down-a-gamers-spine.html