Adding a Score
Games are so much better when you have a score or a timer that changes as you get further into the game. In programming data such as score is usually stored in a Variable. This is a really important idea in programming. A variable is something in a program where you can store a single point of data. It can change or Vary.
Here is the video demo. It starts with a world with kodu in and programmed to move, and eat apples when he bumps them.