Zombie Parking Lot

The problem in Zombie Parking Lot is simple: zombies try to break into a fortified building. To get to said building, they need to walk over the parking lot where they are easy targets. The player controls crosshairs and needs to shoot them as soon as possible, because when they reach the building the zombies tear down the fortifications and then enter. A few can be overwhelmed by the people inside, but too many ends in a quick game over. Between waves, which increase in difficulty, the player can spent earned money from kills for weapons, hired help and various upgrades (weapon upgrades, stronger fortifications and increasing the number of zombies which can enter).