So let's count it all up. 17 story missions with numerous side quest, 7 different cars and 9 different upgrades for them which also has 3 upgrades. Wonderful free roaming game play and numerous types of zombies to kill, even dogs. This is a lot for the low price of $10. Zombie driver is a great gift for the holidays and is a must have for any fan of zombies or classic GTA style driving.