Top similar games like Imperius:

Get ready to protect the entire solar system from an unprecedented threat - the D'Ahari, a race of insect-like aliens. Control an entire fleet of spaceships, trade with other races of an Alliance, and develop your own space station.

Star Ash Fleet is a groundbreaking real-time strategy game that transcends tradition. Set against a holographic 2D battlefield simulating interstellar warfare, players assume the role of a newly appointed Federal Fleet Commander, crafting their own war epic across the vast galaxy.

Includes 47 Steam achievements, leaderboards, and stats!

The Hive is a strategy game with RPG elements where you assume command as the insectoid hivemind. Build and expand your underground colony, harvest resources, and evolve your swarm using DNA. Will you survive in this hostile yet beautiful underworld?

Halo Wars: Definitive Edition is an enhanced version of the real-time strategy classic, Halo Wars, updated to run natively on PC. Halo Wars: Definitive Edition includes improved graphics, new achievements and all of the DLC created for the landmark real-time strategy game.

Grid Miner is a real-time strategy puzzle game where you mine asteroids to gather resources and expand your space station. Unlock new tools and utilities as you progress through levels. Maintain your quotas and learn more about your employer and coworkers at Hypergo Industries.

Battlefleet Gothic: Armada is the RTS videogame adaptation of Games Workshop’s classic tabletop game, pitting the Chaos, Imperium, Eldar, and Orks against each other in visceral space-battles.

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...

After the destruction of the EARTH in 2150, the leaders of the Eurasian Dynasty escaped on board an evacuation fleet. Now they are fighting for the survival of the human species. Their base is one large building comprising of smaller variable parts.

In Exodus Frontier: The Last Stand, humanity’s last hope lies on the distant planet Xylonia. As a brave explorer, you'll battle fierce alien resistance and fight to establish a colony. Strategize, adapt, and defend your foothold—survival of mankind depends on your choices.

Build, manage and defend your medieval castle in this crazy sidescroller RTS game. Build walls, towers and traps to protect your fortress from enemy sieges before launching your own. Command powerful siege weapons and design the perfect strategy to take back the empire.

SpaceFront is a military real-time strategy game. Control Corgis, wage battles, build your army and defend the galaxy from soviet invasion! No game will be the same thanks to procedurally generated campaigns! Join the effort, join the SpaceFront!

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.

Fight for control of a frontier world. Gather resources, build your base, and command your forces in battle. Survive long enough to unleash your ultimate weapon - THE EPIC.

Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes!

Space Tales is an epic space opera that delivers the tactical complexity of classic RTS gameplay within a universe where ancient horrors lurk beyond the stars. Follow Xander's journey from a loyal Inter-Planetary Expansion (IPE) soldier to a champion who uncovers the darkest secrets of the cosmos.

Ardent Seas blends modern naval combat with classical RTS gameplay. Featuring three unique factions, supporting a variety of playstyles.

Real-time strategy battles in amazing sci-fi worlds! Command brave soldiers, mighty mechas and powerful aliens to face the greatest challenges in hostile alien worlds. The galaxy needs you!

Join our machine legion to conquer the world.

Civilization was born from a chaotic star system and has been constantly tested in its development, from ancient civilizations to occupying the entire galaxy, which is long and dangerous.

Capture and upgrade planets, outsmart your enemies, and conquer the galaxy! Simple yet addicting, you can play alone or outsmart your friends in this 2D top-down space RTS. Completely free, no monetization, just fun!

Bull3000VRTS: Multiplayer VR RTS inspired by classics like C&C! Command modern tanks, futuristic aliens, robots, augmented forces, and human troops in thrilling 1v1 or 2v2 battles across epic desert battlegrounds. Gather friends, deploy your ultimate strategy, and dominate immersive combat!

Match colors to build your own spaceship! Explore space and fight alien spacecrafts while acquiring weapons and upgrading your red ship. Become the space pilot you’ve always wanted to be.

A classic RTS with modern look - Crimson Freedom is a gripping real-time strategy game featuring three thrilling campaigns. Set on 22nd-century Mars, the game follows the epic struggle of ideologies battling for supremacy over the red planet.

Command distinct factions in a desperate struggle for power and resources in Tempest Rising - a classic RTS set on Earth after a nuclear war.

World order is revolutionary sci-fi real-time strategy, the main feature of which are modular units

In this game, you are a leader, leading a force of army to fight other forces in the deep spaces. You will plunder their resources, build your homelands, explore and expand, managing your army both strategically and tactically. This will be a saga written with blood and fire.

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

Eons of War is a survival RTS with indirect control. Build a colony for autonomous spaceships, terraform and protect planets from star radiation, and survive against the waves of enemies from the mysterious Rift.

Stellar Reach is a 4X sci-fi strategy game where you control a faction vying for dominance across a hostile galactic frontier. Guide your empire through conquest, prosperity, or industrial power as you advance through six distinct tech trees and forge your path to victory.

Empires of a Tiny Universe is a relaxed single-player RTS where you build and expand your empire across space. Manage planetary infrastructure, develop new technologies for your fleet, and conquer the galaxy - all from a clear, minimalist perspective.

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