Games like Master of Orion

Sid Meier's Alpha Centauri™ Planetary Pack includes the original Alpha Centauri and the expansion, Alien Crossfire.

Set in a post-apoc version of Earth, Revival is a 4x strategy game where the world and its rules can change at key moments, creating a deep and highly replayable experience.

Take command of a civilization that has just achieved faster-than-light travel in Galactic Civilizations IV, the newest entry in the award-winning space 4X strategy game series. Explore the galaxy, colonize worlds, shape cultures, make alliances, fight wars and pioneer new technologies.

Lord of Rigel is a turn-based 4X space strategy game inspired by the classics. In a galaxy divided by two elder races, will you unite with other species or forge your own path? Navigate galactic politics and defeat threats using espionage, research, and military force. How will you shape the galaxy?

Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.

An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.

From the developers of Warhammer 40,000: Gladius, ZEPHON is a post-apocalyptic 4X strategy game built on Proxy’s unique tactical combat system. Guide survivors through a turbulent future, navigating unexpected disasters, eldritch horror and cyberpunk monstrosities. What will you do to survive?

Hexarchy is an innovative, fast-paced, historical 4x strategy game where you use cards and deckbuilding to make your decisions. Single-player and online multiplayer.

Tactical, beautiful, and wholly unique, the GOTY-winning sci-fi RTS returns with Homeworld 3. Assume control and battle through fleet combat in dazzling, fully 3D space while the award-winning story unfolds on a galactic scale.

eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.

The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.

Shogun Showdown is a turn-based combat game with rogue-like and deck-building elements. Position yourself and attack at the right time, upgrade your tiles and combo them to get ready to face the Shogun!

Command massive armies in this epic mech auto-battler. Draft your troops, customize your units, master your formations, and crush enemies in spectacular 3D battles. All strategy, no clickfest. Outsmart opponents in 1v1, 2v2, free-for-all, or Survival Mode.

Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.

Lead armies, rebuild fallen kingdoms, and rise to greatness! Embark on an epic journey of strategy in a visually stunning world. Fight intense battles and uncover a captivating story.

Defend humanity's last hope, pilot a powerful mech, in Frontlines Crisis! A battlefield swarming with insects makes strategic and combat decisions crucial. Each decision will determine your fate. Defend humanity's last sanctuary, fight fiercely, and uphold human honor with wits and courage!

Imperius is an easy-to-learn, hard-to-master space RTS. Command devastating ships of the Imperius Navy and prove your loyalty by destroying everything in your path, no matter the cost.

Explore endless Universe and create the most efficient constellation of colonies. Build conveyor systems to automate production. Take care of Astronauts and their needs! Establish new colonies as part of intergalactic simulation.