1. Use your arrow keys to play (Left, Up, Down, Right) and spacebar (Stop). 2. Get as many food as you can without bumping into the rats. 3. Fast Food is worth 1 point and Vegetable is worth 2 points 4. Bumping into a rat will deduct 1 point from your score. 5. Bumping into shelves and stack of carts will make you lose right away. 6. Be careful! Some rats are faster than others! 7. Have fun!.