Following instructions sent by an unknown assailant, you must survive a day in a city overrun with zombies. With limited time, limited resources, and a closing threat, the choice is yours. This game is a first-person FPS survival game that combines intense combat with various puzzle elements. Go beyond simple survival and uncover the truth behind the message and the secrets of this world. Tension-filled battles against zombies that could pop out at any time and place continue ceaselessly.