Evochron Mercenary!

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.

StarMade is a Minecraft inspired 3D space shooter.

Space Engineers is a sandbox game about engineering, construction and maintenance of space works. Players build space ships and space stations of various sizes and utilization (civil and military), pilot ships and perform asteroid mining.

Empyrion features space & planetary exploration, building & construction, mining & resource gathering, survival, crafting, as well as space & land combats. Using the Unity 3D engine, Empyrion uniquely combines elements from space simulations, construction games, survival games and ego-shooters. The game is currently under development by Eleon Game Studios.

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.

Shores of Hazeron is an ambitious and revolutionary game set in a science fiction universe.

ScrumbleShip is the most accurate space combat simulation devised to date. Gather resources, construct a capital ship out of individual blocks, then pilot it with AI or real-human help against other players.

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. »

Bitfighter is a fast-paced team-based outer-space multi-player combat game. There are many game modes and unique maps. Players can (and do) create maps by using the built-in map editor. Space exploration for warfare, construction, and beyond! It's fast, fun, and frenetic.

A vast, procedurally-generated universe ready to be explored, exploited, and conquered. Go anywhere, do anything. No story, no limits, and no rules. Experience the synergy of total freedom and boundless opportunity. Reach beyond the usual drone of trading and mining. Build stations. Amass fleets. Explore planets. Make friends. Plan raids, ambushes, and even full-system assaults. No hand-crafted assets. The universe is built procedurally - from the asteroids to the planets right down to the ships - so each game is completely different. Each universe is also infinite in expanse: you'll never finish exploring, learning, or conquering. »

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.

Blockade Runner is the beginning of a Multiplayer First Person Adventure Space Sim that will feature fully destructible, operational, crewable 'living' starships in a procedurally generated galaxy.

Pytheas is a galactic exploration, vehicle based, construction game. A fleet from Earth's Exploratory Force has gone missing; you are sent to find it. After finding the aptly named ship, Pytheas, you could return to earth, report the find, and let a collection of search and rescue efforts do the rest. However, realizing that is boring, you decide to scour the nearby star systems with your brand new, eerily empty inter-stellar mammoth. Pytheas gives players the tools to execute their ideas without the limitations of a game engine designed with a different purpose in mind. Barriers that limit how you can play are removed to allow for more freedom. »