Top similar games like Intruder Alert: Ixian Operations:

Ancient Space is a story driven single player real time strategy game where you take command of a fleet embarking on a scientific mission to chart undiscovered reaches of space called ‘The Black Zone’. Overcome overwhelming odds and fight for your life and the survival of your ship and its crew.

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.

Galcon 2 is a demolition derby in space! Send swarms of ships from planet to planet to conquer the galaxy in this fast paced multiplayer strategy game!

AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!

My Lands is a free online RTS where dark and light forces fight for Black Gem and dominion in a vast fantasy world. Cooperation between players, joint economy development, creation of clans and alliances and elaboration of a team strategy serve as the very foundation of the game.

Kingdom Wars is a free to play 3D MMORTS with real-time siege combat, without the pay to win element so common in the genre. Kingdom Wars offers beautiful 3D online world, where players construct strongholds, direct citizens, complete quests and eventually manage a global empire.

A unique space strategy game where thousands of players participate in one shared galaxy.

Battle for the Galaxy is a freemium cross-platform MMO strategy video game. Battle for the Galaxy features player controlled development of the space outpost, further defending that outpost from other players, as well as attacking outposts of other players.

In Istrolid you design your own unique spaceships from a large number of parts to fit your strategy and play style. With no set units or factions you are free to create a fleet where each ship has its own balanced strengths and weaknesses, from basic fighters and bombers to hulking battleships and speedy destroyers.

PlanetX is a real-time strategy MMO set on a spherical planet. Players expand territories, construct buildings, and manage resources to develop their empire. The ultimate goal is to conquer the entire planet by claiming all land plots and outpacing rivals in strategic growth and domination.

ENDLESS Space™ 2 is a Strategic Space Opera, featuring the compelling “just one more turn” gameplay, set in the mysterious ENDLESS Universe™. As the leader of your civilization, will you impose your vision and build the greatest stellar empire?

"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...

With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.

The early stages of an RTS I created in a gap year. Create your loadout, send your mechs to battle, capture objectives and destroy the enemy base

A tower defense game with RTS elements about gathering cheese in space, where mobile carriers are able to deploy smaller spacecraft. Collect cheese to buy and upgrade spaceships and use each type to customize your playstyle and defend your base!

Dropzone is a game of action, strategy and skill. Win 15 minute battles by scoring points. Unlock gear, customize your squad of up to 3 Units and compete in Team 3v3, 2v2 or 1v1 matches. Lay claim to the riches of Europa!

Evolution RTS is a free an Open Source RTS game designed using the Spring Engine. It has been in development for many years and receives updates often. It’s gameplay is designed specifically to appeal to gamers of all skill levels.

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.

A ground-based RTS prequel to the classic Homeworld games. Assemble your fleet and lead them to victory on the shifting sands of Kharak in this compelling strategy game for PC from Blackbird Interactive.

Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction.

Edge of Extinction is a sci-fi real-time strategy game where you command one of five alien factions in a war for survival. Position your armies, deploy formations, and adapt as the battlefield shifts beneath you. Outthink your rivals—or face extinction.

Rise of Legions has shut down. It was a strategy and deck building game with dynamic, tactical gameplay.

War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map.

Star Pulse: The War is an independent real-time strategy game that merges science fiction with fantasy. Players will command a sci-fi faction, harnessing the power of star pulse to gather resources, construct buildings, train troops, and nurture heroes in the fight against invading magical forces.

The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike.

'Mercs Inc': A dynamic blend of tower defense, RTS, and RPG in a fast-paced, top-down strategy game. Engage in thrilling, small-scale combat for an action-packed adventure!

RPF is a simple real-time strategy game with lush graphics and easy gameplay. You mine resources and send your medieval units from one floating island to another to conquer enemies who reside there in quest of treasure and empire.

For a thousand years, three opposing forces have waged war for what they believe is true. There can be no room for compromise: their way is the only way. Dubbed The Infinite War, this devastating conflict has taken its toll on a once-peaceful galaxy and has only served to deepen the hatred between the factions.

Choose between different factions, with their own set of expendable soldiers, mechas, and weapons. Protect your brain, mine gold, and destroy the enemy cortex in his bunker complex!

This is a Prologue experience for Acid Planet, a strategic Wave-Survival Auto-Shooter game. In the challenging first mission you will build your base, command your drones and battle to survive against hordes of monsters and gigantic Kaiju.