The Orion Conspiracy

The Orion Conspiracy is a 1995 graphic adventure video game by Divide By Zero for DOS.

Plot
In the year 2160, the universe is run by corrupt corporations and governments that will do anything in order to get what they want. On a space station, Devlin McCormack has just buried his son, only to receive news that he was murdered. Now, Mr. McCormack must face murderous leaders and space aliens in order to bring his son's killer to justice. Along the way, you interact with various people, solve puzzles, and learn that your son was in fact having a romantic relationship with another man.