Shadowrun - Denver
2000Cyberpunk roleplay MUSH/MMORPG · Free-to-play
Category
Sci-Fi MMOs
Browse 191 sci-fi mmos in MMOFinder with researched status, platforms, business models, combat styles and related MMO features.
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Use this category alongside Find an MMO, platform hubs, and Compare to narrow the catalog by the features that matter to you.
Related discovery hubs include MMORPGs, Sandbox MMOs, Crafting, Open World, and PvE.
Shattered Galaxy
2001Sci-fi MMO real-time tactics game · Free-to-play
Shayam
2000Post-apocalyptic fantasy/cyberpunk MMORPG · Historical commercial MMORPG
Siege on Stars
—Browser space MMORTS · Free-to-play
Sindome
1997Cyberpunk roleplay MOO/MMORPG · Free-to-play
Skyforge
2015Science fantasy MMO · Freemium
Solar Realms Elite
1990Sci-fi turn-based MMO strategy · Shareware
Space Dynasty
1990Sci-fi turn-based MMO strategy · Shareware
Space Empire Elite
1987Sci-fi turn-based MMO strategy · Shareware
Space Wars: Interstellar Empires
2017Turn-based tactical strategy MMO · Free to play
Squad Wars
—Sci-fi space combat MMO · Not applicable (never released)
Star Citizen
TBAScience fiction MMO · Buy-to-play
Star Corsairs
2011Browser space MMO · Free-to-play
Star Sonata
2002Space action MMORPG · Free-to-play with optional subscription
Star Sonata 2
2020Space Sandbox MMO · Free-to-play
Star Supremacy
—Browser sci-fi MMORTS · Free-to-play
Star Trek: Infinite Space
—Browser Space MMO (never released) · Not applicable; the game was never released
Star Trek Online
2010Space and ground MMORPG · Free-to-play
Star Trek Online (Perpetual)
—Science-fiction MMORPG project · Not yet verified
Star Wars: Age of Alliances
2001Science-fiction roleplay MUSH/MMORPG · Free-to-play
Star Wars Combine
1998Science fiction MMO · Free-to-play
Star Wars: Dark Forces RPG
2024Science-fiction roleplay MUD/MMORPG · Free-to-play
Star Wars Galaxies
2003Science-fiction MMORPG · Pay-to-play
Star Wars Mud
1993Science-fiction LPMud/MMORPG · Free-to-play
Star Wars MUSH
1990Science-fiction roleplay MUSH · Free-to-play
Star Wars: Regicide
2020Science-fiction roleplay MUSH/MMORPG · Free-to-play
Star Wars: Squadrons
—Online space combat game · Buy-to-play
Star Wars: The Old Republic
2011Story-focused Star Wars MMORPG · Free-to-play + optional subscription
Starbase
2021Space sandbox MMO · Buy-to-play (Early Access)
Starborne: Frontiers
2023Sci-fi persistent-space tactical MMO · Free to play
Stargate Worlds
—Science-fiction MMORPG · Not yet verified
Starmourn
2018Text-based sci-fi MMORPG / MUD · Free-to-play
Starpires
—Turn-based space strategy MMO · Free-to-play
Starport: Galactic Empires
2004Space trading and combat MMO · Free to play
StarQuest Online
2007Science fiction MMO · Free-to-play
Stars Reach
—Sci-Fi Sandbox MMORPG · Paid Early Access ($29.99–$79.99 tiers)
Steel Hunters
2025Mech PvPvE extraction shooter · Free to play
Stellacept Online
20133D sci-fi fantasy MMORPG · Free-to-play
STellar Chaos
1990Sci-fi turn-based MMO strategy · Shareware
Stellar Dawn
N/AScience fiction MMORPG · Not yet verified
Stellar Odyssey
2026Idle space MMORPG · Upcoming
Stellar Overload
2016Voxel sandbox MMOFPS · Buy-to-play
Subspace Continuum
19952D top-down space shooter MMO · Free-to-play
Sudden Crisis
—Sci-Fi Sandbox MMO · Unreleased; crowdfunding was sought via Kickstarter and Indiegogo
Supernova
2015Sci-fi MOBA / RTS · Free to play
Tabula Rasa
2007MMOFPS · Subscription
Taikodom
2008Sci-fi space MMO · Free-to-play
TempusMUD
1990Fantasy/sci-fi time-travel MUD/MMORPG · Free-to-play
Terra
1997Action MMO · Free-to-play
The Continuum
2008Sci-fi turn-based MMO strategy · Free-to-play with expansion pack purchases
The Matrix Online
2005Science-fiction MMORPG · Pay-to-play
The Repopulation
—Science-fiction sandbox MMORPG · Not yet verified
Tower of Fantasy
2022Shared open-world sci-fi MMORPG · Free-to-play
Trade Wars
1984Text-based BBS space-trading MMO · Free to play
TradeWars 2002
1986Sci-fi turn-based MMO strategy · Not yet verified
Transverse
—Sandbox Space MMO (never released) · Not applicable; the game was never released
Trinium Wars
2016Science-fiction MMORPG / RTS · Buy-to-play
Twilight War: After the Fall
—Never-released sci-fi MMOFPS · Not applicable - never released
UFO Online
2013Sci-fi tactical browser MMO · Free-to-play
UltraCorps
1998Sci-fi turn-based MMO strategy · Free-to-play
Unification Wars
—Text-based sci-fi space strategy MMO · Free-to-play
Utopia
1998Text-based kingdom management MMORPG/RTS · Free-to-play
VEGA Conflict
2013Sci-fi MMORTS · Not yet verified
Vendetta Online
2004Space combat sandbox MMORPG · Free to play
VertexOrbit
2026Browser space MMO shooter · Free-to-play open beta
Warbible
1999Korean sci-fi MMORPG · Historical online service
Warframe
2013Cooperative action MMO · Free to Play
X-Wars Resurrection
2026Browser space strategy MMO · Free-to-start / subscription
Yankee Trader
1990Sci-fi turn-based MMO strategy · Subscription (BBS dial-up connect-time fees)
Zero Online
—Science-fiction MMORPG · Not yet verified
Zy Universe
—Session-based Sci-Fi Arena Shooter (never released) · Not applicable; the game was never released