Oops! Alien Invasion! District 15 has a UFO problem, aliens have released cloned Rage infected zombie-birds upon the countryside. You must now fulfill your sacred duty to protect your humans and homelands from intergalactic harm. Zap birds using your TAIL (Tactical Assault Incendiary Launcher) to build PURR (Properly Used Retaliatory Rage) ... in this fun, fast-paced, hypercasual game of target practice, zombies birds, and UFOs!