This is a new zombie shooting game and they are plenty so you will need to start doing some zombie blasting as fast as possible because they are growing in population and they are getting more and more aggressive. Enjoy your time and hopefully you will not get in contact with the virus as you will need to make due with the weapons you have until you can afford any new upgrades or you can pick op some power-ups. Have a great time shooting them down and try to aim for their heads in order to keep them from respawning.