Dead Sky takes place amidst the chaos of a mysterious viral outbreak, forcing you to fight tooth-and-nail through hordes of undead creatures in order to escape the epidemic and survive. At its core, Dead Sky is an action-packed survival shooter that ties in several strategic tower defense elements. The gameplay consists of a satisfying mix between defending objectives and staying alive within contaminated territory by using the variety of powerful weapons, structures, upgrades, and power-ups at your disposal. In online co-operative play, you and up to 3 friends will team up to fight your way through several environments and the unique challenges they present. Using teamwork, strategy, and quick reflexes, you will work together to defeat the powerful and mutated enemies that cross your path.