Its a zombie survival game based on the classic Metal Slug series from SNK's NEO Geo platform. Take out hordes of zombies with a huge arsenal of weapons to choose from. You can buy additional soldiers, health packs, and upgrade your weapons with points earned throughout each round.
As the stages progress, flying demons move quickly towards your fixed position, while zombies continue to walk slowly in your direction, only to speed up as rounds progress. Aim wisely as your weapons unload they take time to reload, giving the zombies an advantage to gain ground and attack you. There's an ammo meter at the bottom right side of the screen that shows exactly how much ammo you have left. Unfortunately, you can't reload manually, as you must empty your clip before reloading can take place.