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.

Command massive space battles where thousands of ships clash in real time. Build your fleet, choose a doctrine, reinforce the battlefront, unleash commander abilities, and adapt as unexpected events turn the tide of war in this mashup of strategy and auto-battler.

This is Xhono overwatch space station. Enemy forces are attacking. All kinds of turrets, space station supports and plugins at your disposal. Please use your resources wisely, build your defense, face against all kinds of enemies, and explore the unknown secrets of Xhono.

A sci-fi deckbuilder with RTS-style fleet battles. Discover an epic space opera through a full story campaign, then pursue mastery in a separate roguelike mode.

Space 4X game with the ability to build factories, extract resources, with characters, internal and external markets ... Take part in the discussion of the game, share your vision)

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.

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.

Space Tales is a sci-fi RTS where you build fortified bases, manage resources, and command retro-futuristic armies. Adapt to deadly alien factions, capture huge monsters and turn them into powerful allies as humanity fights to survive among the stars.

Includes 47 Steam achievements, leaderboards, and stats!

Take command of the war machine of an empire in this 4x RTS hybrid. Fight battles with your flagship fleet in fully 3D real-time space combat. Recruit, train and dispatch commanders. Give them orders, directives and equip their fleets. Manage your empire’s supply logistics and fleet operations.

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.

Command your fleet and conquer the stars in World of Stars, a strategic game where every decision matters. Manage your ship production, reinforce your defenses, control key systems, establish reinforcement routes, surround enemy positions, and adapt your strategy to the movements of your opponents.

VALTERION: THE LOST EARTH is a sci-fi colony-building strategy game. Lead 50 survivors on Elyra, build a thriving colony, develop its economy and research, return to the stars, and search for the lost path back to Earth.

Loop Defense is a single-player sci-fi tower defense game. Build enemy routes with base walls, assemble a modular defense, manage limited loadouts, energy, and research, face armored, flying, carrier, and wall-breaker units across a star map, or challenge Endless Mode.

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!

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...

A planetary tower defense where enemies attack across land, air, and space. Build layered defenses, manage resources, and survive an escalating alien invasion.

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.

A sci-fi low-poly tower defense game. Design your defense against waves of aliens using a wide arsenal of different towers.

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.

You must adjust your squad's positioning in real-time based on the battle situation, allowing members to complement each other's strengths. Every piece of stardust is crucial; it not only enhances your squad's combat power but also influences tactical direction.

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!

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.

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.

The third and final expansion to the genre-defining and critically-acclaimed RTS, Dawn of War. In Soulstorm, two new armies are introduced – Sisters of Battle and Dark Eldar - raising the total number of playable armies to nine.

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.

In Anno 2205™, you join humankind‘s next step into the future with the promise to build a better tomorrow. You conquer Earth, establishing rich, bustling cities and grand industrial complexes, but to secure the prosperity of your people, you must travel into space.

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

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!

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!

Stellar Reach is a 4X hard 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.