Sid Meier's Alien Crossfire

Legendary designer Sid Meier presents the next evolution in strategy games, with the most addictive, compelling gameplay yet. Explore the alien planet that is your new home and uncover its myriad mysteries. Discover over 75 extraordinary technologies. Build over 60 base upgrades and large scales secret projects for your empire. Conquer your enemies with a war machine that you design from over 32,000 possible unit types.

Sid Meier's Antietam!, the sequel to 1997's Sid Meier's Gettysburg!, is a real-time tactical wargame that allows players to reenact the costly Battle of Antietam.

The Official Expansion Pack for Sid Meier's Alpha Centauri.

Legendary designer Sid Meier presents the next evolution in strategy games, with the most addictive, compelling gameplay yet. Explore the alien planet that is your new home and uncover its myriad mysteries. Discover over 75 extraordinary technologies. Build over 60 base upgrades and large scales secret projects for your empire. Conquer your enemies with a war machine that you design from over 32,000 possible unit types.

Rule as one of many legendary leaders from throughout history. Establish your civilization, construct cities and architectural wonders to expand your territory, conquer or cooperate with rival civilizations in pursuit of prosperity, and explore the far reaches of the unknown world. Will you build an empire that stands the test of time?

Civilization VI is a 4X turn-based strategy game in which players guide a civilization from its founding as a small settlement through multiple eras of development. Players explore a procedurally generated map, found cities, research technologies, develop culture, engage in diplomacy, and compete against AI or human opponents to achieve victory through military dominance, scientific advancement, cultural influence, religious conversion, or diplomatic consensus. A key design change from its predecessor is the "unstacking" of cities, requiring players to place districts on surrounding tiles rather than stacking all improvements in the city center, making terrain and geography central to strategic planning. The game received two major expansions, Rise and Fall and Gathering Storm, which introduced mechanics like city loyalty, golden/dark ages, climate change, and natural disasters. It was succeeded by Civilization VII in 2025.

Sid Meier's Civilization: Beyond Earth is a new science-fiction-themed entry into the award-winning Civilization series. Set in the future, global events have destabilized the world leading to a collapse of modern society, a new world order and an uncertain future for humanity. As the human race struggles to recover, the re-developed nations focus their resources on deep space travel to chart a new beginning for mankind. As part of an expedition sent to find a home beyond Earth, you will write the next chapter for humanity as you lead your people into a new frontier and create a new civilization in space. Explore and colonize an alien planet, research new technologies, amass mighty armies, build incredible Wonders and shape the face of your new world. As you embark on your journey you must make critical decisions. From your choice of sponsor and the make-up of your colony, to the ultimate path you choose for your civilization, every decision opens up new possibilities.

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.

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.

A World to Build… or Destroy. “A war is coming… a war between East and West - between Kingdoms and Empires, between man and Fallen. A future of blood and death, of chaos and destruction.” – the Oracle Ceresa.

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.

Legendary designer Sid Meier presents the next evolution in strategy games, with the most addictive, compelling gameplay yet. Explore the alien planet that is your new home and uncover its myriad mysteries. Discover over 75 extraordinary technologies. Build over 60 base upgrades and large scales secret projects for your empire. Conquer your enemies with a war machine that you design from over 32,000 possible unit types.

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.

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 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.

A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.

Stellaris is a real-time 4X grand strategy game set in a procedurally generated galaxy. Players control an interstellar civilization, exploring star systems connected by hyperlane networks, colonizing habitable worlds, and managing their empire's economy across resources like energy, minerals, and alloys. The game emphasizes empire customization through species traits, ethics, government types, and civics that shape both aesthetics and mechanics. Gameplay progresses through diplomacy, trade, and warfare with other civilizations, while mid-game and late-game galactic crises introduce escalating threats such as extragalactic invasions or hostile artificial intelligence awakenings. Players can pursue ascension paths including genetic engineering, cybernetic augmentation, or psionic abilities. Originally released for PC, the game later received a console edition and has been supported with numerous expansions adding megastructures, new empire types, espionage mechanics, and additional crisis scenarios.