Cosmic Voyage is a public-access unix system and 'tilde' community based around a collaborative science-fiction universe.
It's late. You are seconds away from the main street in a small alley. It's quieter here, but you can still hear the sound of chatter, footsteps, and cars from busy downtown. The city is buzzing, the streets are like arteries. You see an intriguing place in the alley, with a moon on its door. It reads "The Midnight Pub".
From the hills of Dusk's End to the small alleys of Main Street, you feel drawn to the lights of this vibrant metropolis in an uncharted internet territory. The sign reads "Nightfall".