It's the Product Hunt Hackathon. I wanted to serve both masters: hackathons, and Product Hunt.
For the hack part, I wrote a library that let you control a mouse on the screen using just an iPhone and a web browser. You can move your phone around, and it move the arrow on the screen.
For the Product Hunt half, I couldn't pass up an opportunity for a Duck Hunt parody. You play Duck Hunt just like you normally would – except using an iPhone instead of a tacky orange gun. And instead of hunting for ducks, you hunt for.. you guessed it.. products.