Defcon 5 (video Game)
Defcon 5 is a single player adventure/first-person shooter video game developed by Millennium Interactive Ltd, a UK-based studio. It was released for IBM PC compatibles, Sony PlayStation, Sega Saturn and 3DO Interactive Multiplayer in 1995. Defcon 5 actually means the condition used to designate normal peacetime military readiness while Defcon 1 refers to maximum readiness.
Read more about Defcon 5 (video Game): Storyline, Gameplay, Compatibility