Players begin by creating characters to play in a futuristic interstellar society and then enrolling them in one of the military services: Navy, Army, Scouts, Merchant Marines, and other Services. While in the service, players choose their character's training, provided they qualify for it. Depending upon characters' physical and mental abilities, they may learn such skills as brawling, bribery, swordsmanship, computers, interstellar navigation, spaceship piloting, and so on. Through training and study, characters can also increase their base physical and mental abilities.
Characters have a choice to leave the service after every four years of enlistment, provided that they have not been killed or suffered serious injury. After retiring from the service, characters can engage in one of the scenarios that are included with each version of the game. Scenarios can increase a character's wealth or grant possessions, but with the exception of the Psychodelia scenario in Space II, they cannot voluntarily alter a character's abilities. However, most character traits degrade over time as the character ages during gameplay. If a character dies during any of the scenarios, the text file defining the character is immediately erased from the game disk.
The game system was based upon the Traveller role-playing-game, created by Game Designers Workshop, which sued Edu-Ware for copyright infringement in 1982. In an out-of-court settlement, both Space and Space II were removed from the market.
Source: Wikipedia, "Space (computer game)", available under the CC-BY-SA License.