PIN will be used to track your scores
• Use arrow keys or swipe to control the snake
• Pass through walls to appear on the other side
• +50 points per food, +1 point per move
• Ghost snakes appear from past players
• -100 points for hitting ghost tails
• +50 points when someone hits your ghost head
• Space/Two-finger tap to shoot (earn bullets every 200 points)
• Shooting ghosts resets their position