Spotted by Mr Phil Fish, Firefly is a game controlled using a candle. As in a real candle. In your hand.

A small firefly on the screen is attracted to the glow from your candle and will follow your path - it's your job to guide him through caves, dodging obstacles and making sure not to hit the walls. I'm not 100% sure how it all works, but a bigger question springs to mind - won't this be a little dangerous? I mean, last time I checked, hot candle wax burns!