Your mission in this Tower Defense game with a twist is to scratch the baddies off the desktop using a pencil. Fight your way through twenty levels, and unlock many new towers and find different ways to use your lethal pencil. Use YOUR MOUSE to build towers and use your pencil to scratch / hover over the critters to damage them. As the game progresses you unlock new ways to use your pencil and new towers to build. Enemy move slow at upcurve and fast at downcurve. Good luck!