Galactic Civilizations III: Mercenaries

Galactic Civilizations III is the largest strategy sandbox ever made. Start with a single world and expand across the galaxy through diplomacy, trade, cultural hegemony or military conquest in this single-player or multiplayer 4X strategy game.

Master of Orion 2 also known as MOO2 is considered the classic 4x turn based strategy game set in space. The game has a kind of cult status and even by to days standards is still only matched in game play by very few of its competitors.

Galactic Civilizations II (GalCiv II) is a 4X Grand strategy game set in the 23rd century, when multiple alien civilizations scramble to conquer the galaxy, planet by planet, by force, diplomacy, influence (culture), or technology. GalCiv II focuses on the single player experience that consists of a Campaign mode and a "Sandbox" mode, and omits multi-player. The game is notable for its artificial intelligence, which is challenging without being given resources and abilities not available to the player, as is common in the majority of strategy games.

Sid Meier's Civilization is a turn-based strategy computer game created by Sid Meier for MicroProse in 1991.The game's objective is "...to build an empire that would stand the test of time". The game begins in 4000 BC, and the players attempt to expand and develop their empires through the ages until modern and near-future times. It is also known simply as Civilization.

Sid Meier’s Starships challenges players to build a planetary federation by exploring the galaxy, expanding its influence and domain, researching futuristic technologies and engaging in deep, turn-based tactical space combat with an armada of uniquely customizable starships. Each new campaign will feature its own distinctive galactic strategy map of worlds with dynamically generated tactical combat missions that will enhance the game’s replay value. In addition, Sid Meier’s Civilization: Beyond Earth fans who purchase Sid Meier’s Starships will uncover cross-connectivity with the two games such that will enhance and expand the depth of both game experiences.

In Endless Space you play the role of the leader of one of the many intelligent beings of a galaxy at the beginning of the space age. Very quickly, you discover the remnants of an older civilization. That civilization called themselves the Endless, among their ruins, a matter called Dust with amazing proprieties is found. It shapes into whatever its user thinks of, it gives a reality to dreams… dreams that lead to the extinction of the Endless. Since then that matter became the most precious matter of the universe, and therefore the universal currency… but in front of the power of the Dust it is hard, even for the purest beings, not to fall under its charm… We want the players to live an experience that goes beyond just strategy. You will live your own story of space conquest, with your own randomly generated galaxy full of civilizations, lifeforms, technologies and unknown worlds for you to conquer.

StarDrive 2 is a 4X Turn Based Strategy game built in the classic style of the singular and incredible Master of Orion 2. In StarDrive 2 you will explore a vibrant galaxy filled with danger and intrigue in a deep turn-based strategy layer. You will design custom spaceships and deploy them into real-time battles with spectacular graphics and effects. You will conquer worlds in a turn-based tactical ground combat mode. You'll deal with aliens, pirates, monsters, and ancient threats, most of whom want to kill you to make room for their own empires. StarDrive 2 also features a "Battle Arena" mode where you can get right to the action by designing ships and playing through story-based campaigns with your fleet. Earn money as you work through the challenges to unlock new ships and weapons. And of course, you can customize your race for a unique experience, engage in deep diplomatic negotiations, research hundreds of different technologies (or maybe steal them with your spies), control strategic resources for the benefit of your empire, enslave enemy citizens, build armies of giant mechs, and so much more. In the end, StarDrive 2 provides a comprehensive and beautiful 4X experience. Check out our screenshots and our videos and come join us on the forums. We have a large and active community and would love to have you come share your thoughts and questions with us.

Distant Worlds: Universe is the newest chapter of this critically acclaimed sci-fi series, adding incredible new features and an exciting new storyline.  Universe is also the ultimate collector’s edition, the first time all previous Distant Worlds releases have been included in one package, along with an updated manual and greatly expanded modding support. Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game. The Universe is Yours!

In Imagine Earth, players must protect and nurture a fledgeling space colony while wrestling against the forces of corporate greed and climate change. Establish trade, research new technologies, form alliances and wage economic warfare in a real-time battle for galactic survival. Features: Boldly Go: Imagine Earth is a real-time planet simulation and a build up strategy game. Your job as a space colony manager is to explore distant planets, build up profitable colonies, and trade resources into space. Many ways to play: A multi-planet story campaign, ‘competition’ mode with five enemy factions, ‘free play mode with endless procedurally generated challenges, and a Planet Editor with custom building and terraforming. Hold the line: Use tower defence mechanics to protect your colony from invading aliens, marauding space pirates, and swarms of locusts. Hostile takeover: Form alliances with other colonies and intergalactic traders, or wage crafty economic warfare to secure total financial dominance for your planet. Carbon footprint: Earth has been destroyed by an ecological collapse - will your new home go the same way? Keep your worldwide emissions to a minimum, or else suffer rising sea levels, freak weather events, and more.

Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders and Overlord series, bringing all the exciting tactical-turn based combat and in-depth 4X empire building of its predecessors to space in an all-new sci-fi setting. Emerge from the cosmic dark age of a fallen galactic empire to craft a new future for your people. Explore the planetary ruins and encounter other surviving factions that have each evolved in their own way, as you unravel the history of a shattered civilization. Fight, build, negotiate and technologically advance your way to utopia, in a deep single player campaign, on random maps and against friends in multiplayer.

Clans to Kingdoms is a 4X Turn-Base Strategy City Building Video Game for Windows PC. You start as a small Clan with one single settlement and the aim is to manage and develop your civilization up to a Kingdom with several cities and armies. The game has 6 settlement levels, 3 outpost levels, 120 researches, 150 distinct buildings and 21 distinct military units. Both single and multiplayer games can be played with up to 15 civilizations.