What do you get when you take a normal, medium-sized Terraria map with a castle in it, then scribble in all kinds of good (and bad) stuff with a map editor? Fun!
Watch out for lava, meteorite, sand traps, and more as you traverse this world of scribbles for any kind of ore you might desire. It offers a very different flavor of gameplay, and even a few items given to you at the start to help you get around. Have fun and enjoy!