Cosmic Supremacy is described as 'FREE tick/turn-based massively multiplayer space strategy game with a 3D 'Galaxy View' interface. Its based on 3-6 week sessions and has user scriptable automation' and is an website in the education & reference category. There are nine alternatives to Cosmic Supremacy, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac, Steam and Android apps. The best Cosmic Supremacy alternative is FreeCiv, which is both free and Open Source. Other great sites and apps similar to Cosmic Supremacy are FreeOrion, Endless Space, Stellaris and Galactic Civilizations.
Freeciv is an open-source, turn-based strategy game based on Civilization II. Inspired by the history of human civilization, the game commences in prehistory and your mission is to lead your tribe from the stone age to the space age...
FreeOrion is a turn-based space empire and galactic conquest (4X) computer game being designed and built by the FreeOrion project. FreeOrion is inspired by the tradition of the Master of Orion games, but is not a clone or remake of that series or any other game.
Endless Space 2 will put you in the fascinating role of a leader guiding a civilization in making its first steps into the cold depths of interstellar space. You will explore mysterious star systems, discover the secrets of ancient races, develop advanced technologies of...
Explore a vast galaxy full of wonder in Stellaris, the evolution of the 4X strategy genre with space exploration at its core.
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.
Turn based, 4X, empire space builder, singleplayer, asymmetric, Emperor focused grand strategy. The game is a fast-paced, turn-based space empire builder with no micromanagement, asymmetric mechanics, and that focuses on you as the emperor.
Build your own space faring empire in this true 4X mobile game. Discover new technologies, other alien races, derelict ships and much more as you spread your Empire to the Stars. The galaxy maps and star systems are procedurally generated, so with every game there will be...
Star Traders 4X Empires is a civilization building game based on the Star Traders RPG. Discover more than 100 lost technologies, upgrades, and ship components as you reclaim the Star Traders’ heritage and discover the future.
Remnants of the Precursors is a open source modernization of the 4x strategy game Master of Orion.
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