This action game is somewhat similar to Missile Command, but with its own unique feel. This game was mostly popular on non-PC (Apple) computers. This PC version is CGA-based (so its graphics look rather poor) and it is QUITE hard. So if you're looking for a challenge, this could be it. (NOTE: This game will probably run fast on your modern computer so you will probably need to use DOSBox or Moslo to play it; both are available on the Essential Utilities page.)