Sci-Fi

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An alternate universe roleplay set a year after the Reaper War. The Reapers are mysteriously under control and are repairing the relays, allowing travel to occur again between star systems.

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The Wastes is a dedicated Fallout roleplaying site, set within the Southern Wastelands of the irradiated United States of America. Create your own original character and explore, raid or build within the setting! The Wastes provides a nurturing, fun...

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Welcome to the dystopian city of New Hope. Corporations rule this class divided city, towering over the rest in their Sky Society penthouses. They make promises to keep the middle class and street level residents compliant. They pay Enforcers to ensure...

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Do you want to experience living within a faction with people who have the same mindset as you? Come get tested then decide to follow the test or follow your heart. Go through initiation in the faction you're placed in! You are invited to join the...

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The year is 2384. The Dominion War is over, and once again we look toward the unexplored. FRONTIER is a play-by-forum Star Trek RPG, coming up on our 4 year anniversary! We offer a unique format, allowing players to choose their adventure each month...

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Maelstrom is a sci-fi-themed roleplaying site where the universe is created collaboratively by YOU the members. Play as humans living on the Watchtower space station or create your own alien species along with their home planet. No word count. Friendly...

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We're a mature, literate, open-universe science fiction RP. We focus on collaborative writing and highly interactive play-by-post gameplay. Join the megaship, the SS Defiance, as it roams lost in a distant quadrant of the galaxy.

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We are a mature, non-canon Pern set beyond the 9th Pass with an altered time line. This means things have been shaken up quite a bit. We also feature 2 mutations of dragons, with roles and positions available for just about anyone. We like active players...

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The 'Verse Online is a roleplaying community based on Joss Whedon's Firefly 'Verse. Please stop by and join in on the fun! We welcome writers/players of all sorts.

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This is a post-apocalyptic role play, based on the hit series The 100. This rp has no set timeline (threads can take place before during or after any of the episodes), AUs are also permitted! Lots of available canons and tons of opportunities for made up...

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Palladium and Battletech Orientated PBP Role Playing site

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Star Army® is a creative community of role-players, writers, and sci-fi fans that have been world-building our own unique setting since 2002.

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A Star Trek sim set post-Dominion war. Join the Fleet's first Bajoran captain as she guides the newly commissioned Science/Exploratory mission to the Gamma Quadrant!

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New Dawn is a Sci-Fi/Fantasy RP set in an expanding galaxy of detailed planets, species, and technologies. Carve your own path and create your own stories in this sandbox setting through adventure, politics, battles, or even slice of life.

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Space: the final frontier. These are the voyages of the starship Enterprise. Her five-year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before.