Tired of the many trek games already done, and done well, I decided to invent my own space game, with my own rules. The result was UFO. It differs from the Star Trek games I have seen in its general format and weapon selection. The same idea prevails, however: kill or be killed.
UFO is a strategy game in which you play against the computer in a life-and-death struggle for superiority of space. It takes place after a space war with another planet in which both earth and the attacker's planet are destroyed.
UFO was written by Raymond J. Kernay and published as type-in source code in Creative Computing Vol. 3, No. 4, July/August 1977. The listing used vanilla BASIC and was intended for any BASIC system (with possible minor modifications required).