SCORE : 0
RULES
1. You have 3 lives
2. Shoot by clicking on the screen
3. You get 10 points for each zombie killed
4. You lose 5 points if you miss
GAME OVER
1. You have 3 lives
2. Shoot by clicking on the screen
3. You get 10 points for each zombie killed
4. You lose 5 points if you miss
GAME OVER