You're a fast driving cop in search of finding mobsters in the city. Locate and destroy
their cars by bumping into them. Get 'em all before the time runs out in order to advance to next level.
You're on a rescue mission. Get all your wounded soldiers out of the enemy territory. Just watch out for soldiers that have already transformed into zombies.
Protagonist was thrown into a prison because he's been accused of a robbery. The warden here is very mean and an intimidating guy. Help the protagonist rescue inmates then escape this prison of hell.