Traveller
"Traveller is a roleplaying game (RPG).
- It started its life as the shared science fiction universe of several college students in Illinois who later decided to publish a RPG.
- It grew into so much more: RPG books, board games, novels, computer games, a universal sci-fi gaming system, world-building tools, etc.
- In the end of ends, it's just a great, damn story!"
See more at "What is Traveller"