Simple 2000 Series Vol. 95: The Zombie vs. Kyuukyuusha (The Zombie vs. Ambulance in English) is a Japanese budget video game. It also received a release in Europe under the title Zombie Virus.
You play the role of an ambulance driver that is sent out to rescue civilians in the midst of a Zombie Armageddon. Civilians are located throughout the city while zombies walk the streets in large groups. Your goal is to kill as many zombies as possible while picking up the civilians.
In addition to the basic gameplay, there is a combo counter that tells the player how many zombies they have managed to kill within a few seconds of each other. The player also has the ability to upgrade his or her ambulance throughout the game.