Ryzom
PlayableAn open-source sandbox MMORPG set on the living planet Atys, featuring classless progression, harvesting, deep crafting, optional PvP, guilds, factions, outposts and player-influenced politics.
These recommendations are grouped by the systems players tend to love in Star Wars Galaxies—not just by setting or art style.
EVE Online
PlayableA persistent science-fiction sandbox MMO built around player corporations, territorial conflict, industry, logistics, politics, piracy, and a deeply player-driven economy.
Entropia Universe
PlayableA long-running sci-fi MMO built around a real-cash virtual economy, hunting, mining, crafting, trading, land ownership, professions and open-ended skill progression.
Mortal Online 2
PlayableA persistent fantasy sandbox MMORPG where players gather resources, craft goods, trade, build houses and fortifications, form guilds, and fight in first-person full-loot PvP.
Shores of Hazeron
OfflineAn unusually ambitious science-fiction MMO simulation where players began on a planet, founded cities and industries, designed and built spacecraft, colonized other worlds and eventually created interstellar empires in a vast procedurally generated universe.
Star Citizen
PlayableA persistent space sandbox with cargo, mining, salvage, piracy, bounty hunting, multicrew ships and reputation.
Project Gorgon
PlayableA deliberately old-school fantasy MMORPG with open-ended exploration, hidden systems, unusual skills, classless skill combinations and a strong emphasis on discovery rather than guided progression.