Galactic Civilizations III 2.6

The human race has finally mastered faster-than-light travel opening up the stars for exploration and colonization. As the leader of the newly formed Terran Alliance, you will guide humanity's expansion into becoming a space-based civilization. Soon, you will discover that we are not alone. Alien civilizations with their own histories and motivations are expanding as well. Research new technology, design starships, negotiate trade and treaties, wage wars, colonize new worlds, construct starbases in the largest 4X strategy game ever made. And when you've finished that, play again as one of the many included alien civilizations each with its own history, technology tree, ship components and more.