DefCon 5 is a Sci-Fi First-Person Shooter game, developed by Millennium and published by Multisoft, which was released in Japan in 1996.

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2205 Anno Domini. You are a lone cyberneer and the last remaining hope for the human race. The sudden and mysterious death of your friend and colleague has thrown you into a web of corporate and deception. The key to survival lies the depths of a remote deep space mining station MRP6F, which after 200 years of peace is suddenly threatened by an alien onslaught. Defcon 5 is a frantic race against the clock set in a glorious 3D environment. Only by repelling waves of alien spacecraft, strategically placing automated defensive equipment, and securing the base once and for all will you uncover the biggest galactic cover up mankind has ever faced.

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