The file format nearly as old as the internet itself seems to have made a popular comeback recently. Being the curious mind I am, I scoured the web to find out what these things are, and how to make one myself.
Remember those dorky kids in school? While you went on to have what I'll assume is a good life working a decent job and having a family, they went on to create things like this that make the world a better place.
HILL CLIMB RACING is absolutely ADDICTIVE and will steal more battery life that any other game! One of the most addictive and entertaining physics based driving game ever made for Android! And it's free!