Kris Temmerman lives in a combined shopfront/apartment in Antwerp. Last November, with the shopfront empty, he decided to put it to good use, installing a custom arcade rig and coding a simple video game for people to stop and play.
Not for money, just for fun. The best part is that he's released the design docs so you can build your own (he made it using the DIY electronics kit Arduino).
Storefront pixel-art video-game for the neighbourhood [Boing Boing]