This week's cool links have only two entries. But what a revolution they represent! Crayon Physics Deluxe is a game featuring new type of physics engine. It took only 5 days to create because of it's simplicity. And that's the beauty of it. This had good potential to spawn a revolution in way games are made in the future. Songza is a online music player that uses enormous database of youtube videos to find and play the songs you are searching for.