Defcom 1

Defcom 1 is a shoot'em up game released by Iber Software in 1989.

It is the year 1992. Earth's nations are finally at peace. Suddenly, a threat from outer space puts the Earth into alert level Defcom 1 by the World Security Council. Your job is to defend Earth against an alien invasion with your powerful Black-Thunder helicopter. After you succeed you will travel with a space shuttle through an asteroid belt to reach the alien home world. There your will be able to pilot a combat ship with powerful weaponry for your final battle against the invading aliens.