Top similar games like Champions of The Cosmos:

Step into the world of galactic combat in "WarOS", a Chinese sci-fi game! It creates its own structure, integrating the core gameplay of RTS with the details, plot and growth system of RPG, simplifying complex micro-manipulation, and making the game experience both fun and exhilarating.

Humanity is racing through space on the wings of hope, away from the emerging threat of a cosmic cataclysm that could spell extinction. And mysterious aliens with powers beyond imagining follow them everywhere they go.

Strategy, timing and fortune: Novel and immersive tower defense game experience!

Play a 4x game in 40 minutes... or less! We streamlined 4x strategy down to a game that captures the fun in a manageable play time. Lead your faction against escalating enemies and expand the reach of your empire. Multiple paths to victory allows for a variety of strategies. Build your empire.

Exostation is a sci-fi real-time strategy game. Reach sustainable planet economies by building, allocating, mining, and selling wisely. Allow humanity to spread and conquer new solar systems not by war but by ensuring its planet's resources are not exhausted.

A game in the genre of management strategy. Here you can build your own factory for the production of robots, and on another planet, and extract resources and test robots on other different planets.

A grand and intense tower defense science fiction game, where you only need to purchase once to enjoy all the content of the game.

As a commander of an imperial space force you will conquer unexplored planets, create colonies and equip your fleet for attack or defense. Strategic warfare is the focus of Spaceinvasion!

Mecharise is a strategy and tower defense game that combines elements of base building, resource management, and wave-based combat against hostile aliens. Pilot a mecha as you colonize new worlds and defend your base against enemy attacks.

Join our machine legion to conquer the world.

Astro Industry Wars is a lighthearted take on the RTS genre featuring distinct unit types, base building, economic production chains, and customizable unit rosters.

On a forgotten world, confront a malevolent machine intelligence. Extract minerals, build factories, power up the railguns, and arm the missile batteries. Defend the Fortress Omega against the alloyed nightmare.

Ifectra is a strategy game set in 2124 on the distant planet Emevera III, ruled by the Maxploit Corporation, where an epidemic of a yet unknown virus broke out. Your goal as the corporation security commander is to evacuate as many healthy people as possible and to eliminate infected individuals.

Build a small mining colony in deep space and defend it from alien invaders as you extract precious minerals from asteroids in Astro Mining.

Star Trek: Prelude is a space-based game that builds defense towers on earth to defend against alien invaders called Black Ember.

Tower Defense with resource- and base management! Waves of enemy robots with special abilities, shield and armor! Mining, refining and production for building and repairing! Environmental hazards and the best: the Orbital strike!

SOOT is a Simulation and Strategy game where you control the terraforming crew of the Ziggurat, a roaming space station that orbits small planets and exploits their resources. Follow Captain Christopher Mason and Lieutenant Ferdinand McCann as they (and you) master the craft of terraforming.

Block Strategy is an RTS Base Defence roguelite with a fully destructible world. Build your base and find fuel to power your reactor before you're overrun by an onslaught of enemy robots.

Commander, we need you to prepare for a new conquest! Set up your base, gather resources and build a defensive perimeter with walls and towers to protect your outpost from incoming waves of enemies. Then gather your forces and send your units and mini-units to annihilate the enemy.

Red Sea is an intense Real-time Tactics game where you control a small team of vigilantes in increasingly challenging battles. It features a Scriptable Tactics system that mixes auto-battling with manual overrides and has a ton of powerful ability interactions to discover.

Build your towers, plan your efforts, watch out for changing paths and strike back against the alien invaders in this challenging tower defense game!

Design your own spaceships and assemble a fleet to fight in epic PvP battles. Ships are fully destructible and manned by persistent crew members including yourself. Ranked/casual matchmaking, PvE for practice. Show your creativity, strategy and tactics to defeat enemy Admiral!

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

Step into the arena with IDUN: Prologue, a thrilling slice of our full-length defense RTS where real-time strategy meets rogue-lite chaos. Fight your way through unique mission objectives with overwhelming swarms of enemies.

A strategic space tower-defense game. Enemies detect, warn, and try to bypass defenses, forcing you to adapt. Combine diverse towers and face unique maps for varied battles. With tense sci-fi atmosphere, it delivers a fresh experience beyond traditional tower defense.

Become the space captain you always wanted to be. There are just a few problems, your ship needs work, there’s a price on your head, and your crew are idiots. Seek your fortune and the truth in The Galactic Junkers, a comedic space combat adventure game.

Embark on an electrifying journey through the neon-lit streets of Tokyo in "Tokyo’s Neon Monsters" – an adrenaline-pumping fusion of real-time strategy and tower defence like you've never experienced before!

Build, defend, adapt… or just watch your base burn. Not My Base! is a Tower Defense game where you build up your defenses and fight through various levels. Strengthen your fortifications, choose your upgrades, and craft new strategies to withstand the chaos and havoc unleashed by angry armies.

Build traps. Fight bots. Survive the waves. Die Robot is a stylized third-person tower defense game where you defend a mysterious Data Seed from waves of robots, the Carbonites. Mix real-time base building with fast-paced combat in a strategic fight for survival.

Darwinia blends real-time strategy, action, and puzzles with a unique gesture-based control system. Save the Darwinians, battle viruses, and restore order in a retro-inspired digital world. Winner of multiple prestigious  awards, including the Seumas McNally Grand Prize at IGF 2006.

Unionatic is an impressive game that combines strategy and village building. Construct your village, manage resources, and plan strategies while also experiencing thrilling TPS gameplay, controlling your character and engaging in intense battles against enemies!

Defend your planet against the Space Invaders. Build your defences against lovecraftian spacecrafts. Keep your health up and you might even become an invader yourself! Warning: this game contains flashing images that may make it unsuitable for people with photosensitive epilepsy.

Harness the elemental powers of fire, wind, ice, and lightning to enhance your defensive turrets and hold back relentless waves of enemies. Strategically build your deck and adapt your tactics to survive increasingly challenging encounters.

Fight battles through human history, defeat your enemies and save humanities future! The Unwanted War lets you follow history itself and take influence on humanities ultimate fate. Are you going to use your knowledge and power for good or will you bring doom over the human race?

This is a prologue for the main game Grimstar - a single-player real-time strategy game with a story-driven campaign. The sudden death of your brother has hit you hard. However, the corporation for which he has sacrificed his life requires you to take his place until his contract is fulfilled...