Bioshock Infinite is delivered as a Steam cd key after your purchase. Bioshock Infinite activation and installation is done entirely on Steam. BioShock is a shooter that has not seen any guns and tactics, unlike any other guns you play up to now. From simple revolvers to bombs and chemical weapons, you have a complete arsenal, but you also have to genetically alter your DNA to create an even more deadly weapon. Buy Bioshock Infinite, start FPS now.