A free program for Android, by Gameplier.

Kontra is a fast-paced FPS action game that will bring you an intense experience of action-packed games. The FPS action is not limited to shooting, as you will have to survive against various types of enemies and bosses. You will also have to eliminate various obstacles to not let the infection spread. As you eliminate players, the infection will be spread and you will have to fight against them. It will be a race for the survival of the most skilled players. You will also have to fight against other players to become the last one standing. There will be different weapons, such as machine guns, sniper guns, grenade launchers, and rocket launchers.