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The player takes the role of a DOD operative who must use the BMD(Ballistic Missile Defense System) to protect the United States. This system is composed of ground-based, land-launched, and space-based system components. The goal is to destroy, defeat, confound, or destabilize incoming ballistic missiles.

The game-play is mostly text based with the player entering 5-letter commands or coordinates in order to operate the BMD. In addition to active weapons, the player has access to surveillance system needed to detect missile launches and space mines. These systems are susceptible to visual interference and outages due to their orbits.


Defcon 5 DOS Main control screen at the start of the game
Defcon 5 DOS Checking the Multi-Track Thermal-Target Interceptor(MTI) schedule to see which one we can bear on the enemy interceptors.
Defcon 5 DOS Entering an invalid command
Defcon 5 DOS End of game report-card

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Alternate Titles

  • "Def Con 5" -- UK title

User Reviews

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Critic Reviews

ASM (Aktueller Software Markt) Amiga Jan, 1989 4.2 out of 12 35
ACE (Advanced Computer Entertainment) Amiga Mar, 1989 340 out of 1000 34


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  • Computer Gaming World
    • November 1996 (15th anniversary issue) – #2 Worst Game of All Time

Contributed to by WillowGreen (187)