Entropia Universe!

EVE Online is a massive multiplayer online game that offers limitless potential to discover, explore and conquer an amazing science fiction universe where you pilot spaceships, fight, trade, and form corporations and alliances with other players.

Daimonin is a community driven open source MMORPG.

Eternal Lands (EL) is a free, multiplayer, online role-playing game (MMORPG) created by Radu Privantu in 2002. The setting is a medieval fantasy world. There are historic elements such as medieval architecture and weaponry along with fictional elements such as other humanoid races and magic. It is made of up two main continents: Seridia and Irilion in the world of Draia. Seridia is the first continent, and the place in which new players spawn. It consists of 14 main maps, 7 storages, 2 main PK maps, and the only spot to find the Wraith. Irillion is directed towards experienced players. »

PlaneShift is a Free Massively Multiplayer Online Role Playing Game. Free? That's right, by making the software's code available for all, PlaneShift allows anyone to improve the game for the benefit of all. So, what have you got to lose? Try it today.

OGame is a strategy-game set in space. Thousands of players across the world compete at the same time. In order to play you only need a web browser.

Stendhal is a fun friendly and completely free 2D multiplayer online adventure game with an old school feel.

Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets.

Experience the true power in Battle Supremacy: EVOLUTION, a sci-fi transforming vehicles game with thrilling gameplay and showoff-worthy visuals.

1 IN SPACE FREE - Simulator 3D3D game for android.Science-fiction space simulator.

Vendetta Online is a 3D space combat MMORPG for Windows, Mac, Linux and Android. This MMO permits thousands of players to interact as the pilots of spaceships in a vast universe. Users may build their characters in any direction they desire, becoming rich captains of industry, military heroes, or outlaws. A fast-paced, realtime "twitch" style combat model gives intense action, coupled with the backdrop of RPG gameplay in a massive online galaxy. Three major player factions form a delicate balance of power, with several NPC sub-factions creating situations of economic struggle, political intrigue and conflict. The completely persistent universe and detailed storyline add to the depth of immersion, resulting in a unique online experience. »

Anarchy Online is one of the oldest SciFi - MMORPGs. You arrive on the planet Rubi-Ka and play through the story about the source of a valuable mineral known as "Notum". Fighting for military and political power on Rubi-Ka are the Omni-Tek corporation (owners of the planet's one thousand-year lease), the Separatist Clans, Terrorist groups, extraterrestrial life, and ancient civilizations.