
XCOM: Enemy Within
Action
XCOM: Enemy Within is the expansion to the 2012 Game of the Year award-winning strategy game XCOM: Enemy Unknown. Enemy Within adds an incredible array of new abilities, upgrades and weapons to combat new enemy and alien threats.

XCOM® 2
Action
XCOM 2 is the sequel to XCOM: Enemy Unknown, the 2012 award-winning strategy game of the year. Earth has changed and is now under alien rule. Facing impossible odds you must rebuild XCOM, and ignite a global resistance to reclaim our world and save humanity.

XCOM®: Chimera Squad
Action
XCOM: Chimera Squad delivers an all-new story and turn-based tactical combat experience in the XCOM universe.

XCOM 2: War of the Chosen
Action
XCOM® 2: War of the Chosen adds extensive new content in the fight against ADVENT including new soldier classes, enemies, missions, maps and more. Requires XCOM® 2 game. Sold separately.

X-COM: UFO Defense
Retro
You are in control of X-COM: an organization formed by the world's governments to fight the ever-increasing alien menace.

Galaxy Squad
Indie
Galaxy squad is a hardcore turn-based tactical roguelike, inspired by FTL and XCOM.

Galaxy Admirals
2D
Galaxy Admirals is a multiplayer turn-based cosmic strategy with pretty innovative and challenging gameplay. Improve your command skills with AI and conquer the whole universe by fighting with real players.

X-COM: Enforcer
Action
X-COM: Earth's top-secret eXtraterrestrial COMbat unit The Place: America - early 21st century The Mission: Eradicate the extraterrestrials Alien forces have invaded Earth and are terrorizing the population.

X-COM: Apocalypse
Retro
There's something evil in the city tonight... Earth has been ravaged by human excess, petty conflict and alien invasion. The world's population has been herded into huge cities, the first of which was Mega Primus. 2084: A Utopia shattered, social collapse and civil unrest reigns in Mega Primus. Fiendish aliens terrorize the city.

Xenonauts
Indie
Xenonauts is a strategy game in which you control a multi-national military organisation defending a Cold War-era Earth from alien invasion, using small squads of persistent soldiers to eliminate the extraterrestrials and recover their technology in turn-based ground combat.

X-COM: Interceptor
Singleplayer
They're back...only this time the heinous aliens are out to destroy Earth and rule the new frontier. As X-COM commander, it's your sole duty to protect humanity and the prized mining operations in outer space.

X-COM: Terror From the Deep
Retro
The war continues... X-COM: UFO Defense brought you to a galactic battlefield. X-COM: Terror from the Deep brings the alien terror into a totally new dimension.Seeking to take advantage of a weakened Earth, X-COM's deep space foes unexpectedly change strategy and launch a powerful second front against planet Earth.

RAM Pressure
Indie
Tactical story-driven online multiplayer game combining the turn-based combat of X-COM with a deep, well-grounded sci-fi setting. Experience intense tactical online multiplayer action and explore a deep plot and unique storyline built on both single-player and multiplayer missions.

Battlezone: Combat Commander
Action
Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command.

Enemy
Indie
The video games you played as a kid, mashed together and remade into a tactical role-playing game.

Tower Dominion
Singleplayer
Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!

Xeno Command
2D
Defend galaxy against Alien invasion in the RTS offline game with roguelike fun

Aliens: Dark Descent
Action
Drop into the gripping journey of Aliens: Dark Descent, a squad-based, single-player action game in the iconic Alien franchise. Lead your soldiers in real-time to stop a new and terrifying kind of Xenomorph outbreak on Planet Lethe.

Alien Shooter TD
Indie
Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!

Defense of the Earth
2D
Gather a task force of the best fighters earth has to offer and research technology to defend against the alien invaders. You have to lead your squad through various grid- and turn-based battles. Between missions, you plan your next moves, manage your crew's abilities and unify humankind.

X-Morph: Defense
Indie
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.

X: Beyond the Frontier
Action
The Human Race had advanced to the point where we could travel among the stars, we developed giant automated machines to help us colonise other worlds, but there was a fault in their programming and they turned and attacked. Forcing us to lay a trap to protect Earth and exiling the Human race to stay on Earth once again.

X3: Terran Conflict
Action
It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!

X-Team
Indie
X-TEAM is a role-playing strategy with a non-linear narrative. You must form your squad and fight aliens around the world. Use dozens of weapons, paranormal abilities of heroes and your charisma to destroy the enemy!

Xenonauts 2
Action
Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.

Recon Control
Indie
Recon Control is a turn-based strategy and 2D platformer hybrid focused on combat. Lead your special operations squad through a set of challenging and deadly missions.

USC: Counterforce
Indie
Lead your Space Commandos in an epic revival of turn-based squad tactics inspired by the likes of UFO/XCOM, Space Hulk, and Aliens, featuring in-depth skill & combat systems and multiple game modes. Discover the truth behind the demise of colony MC83-A and join the USC in defending humanity

Concealed Intent
Indie
Concealed Intent is a simultaneous turn-based game of tactical space combat. Players control their ships in a fully 3D world - hunting down their enemies, just as they are being hunted themselves. In Concealed Intent you know your enemies are out there, but not exactly where, or even what they are.

Interstellar Conquest
2D
Take planets and assemble your fleet. The conquest of space is now, navigate through asteroid fields and hide in nebulas to outsmart your opponents. Experience the challenge of ion storms disrupting your ship's sensors and become the ultimate space fleet commander.

Horizon
Indie
Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets.

Othercide
Indie
As Humanity’s last hope, lead your army to combat in an intricate dance of spectacular actions and counters, using an original Dynamic Timeline System, and face fearsome bosses in epic battles.

Predestination
Indie
Predestination is a turn-based sci-fi 4X game set in the distant past of our own galaxy. Ships from countless races are flung back in time by a powerful hostile race known as the Revenants, and must now work to rebuild their empires and somehow stop the Revenants in the past.

Under Domain - Alien Invasion Simulator
Indie
Under Domain - Alien Invasion Simulator will surprise you with a Sci-fi turn-based game completely different from others. How about turning yourself into an Alien and planning an invasion to Planet Earth? You can secretly influence human history and build war machines to exterminate human beings.

The Bureau: XCOM Declassified
Action
The year is 1962 and the Cold War has the nation gripped by fear. A top-secret government unit called The Bureau begins investigating a series of mysterious attacks by an enemy more powerful than communism.

XCOM 2: Alien Hunters
Strategy
Transform XCOM soldiers into an elite alien hunting squad and face off against new alien Rulers. Now Available.

Undeadly
Singleplayer
THE DEAD RISE - Direct a group of survivors in a turn-based strategy survival game. Use survivor abilities, scavenge for resources, all while navigating a warped reality strewn with inexplicable phenomena. Come nightfall, undead seek the living. Can you survive, UNDEADLY?

Invisible, Inc.
Indie
Take control of Invisible's agents in the field and infiltrate the world's most dangerous corporations. Stealth, precision, and teamwork are essential in high-stakes, high-profit missions, where every move may cost an agent their life.

Commander: Zombie Wars
2D
Embark on a gripping turn-based tactical game in a zombie-infested world. Choose survivors or zombies. Gather resources, recruit allies, and strategize against the undead or join the undead. Shape custom maps, and decide the fate of the world. Join the fight now!

Revenge of the Titans
Indie
The ultimate mash-up of Real-time Strategy and Tower Defense!

Immortal Tactics: War of the Eternals
Indie
Experience a Fast-Paced Roguelite Turn-Based Strategy game with a New Turn-Based System which will need you to plan early on and create strategies that would lead your army to victory. Create an army with different Characters and Leaders to choose from and explore this Roguelite world.

Overfall
Indie
Explore the shifting seas of a strange realm. Fight challenging foes…or befriend them. Recruit lost souls and learn their histories. Take part in stories of the absurd and the tragic, the magical and the mundane - intimate, epic, and never the same twice in this fantastic strategy roleplaying game!

Xenowars
2D
This is a turn-based strategy/RPG game set in the stars. In the early stages, you will recruit a team of experts on Earth for exploring a distant alien homeworld, choosing between scientists, mutants, and soldiers. Scour the planet for lost alien technology and uncover the secrets to Earth’s doom.

Universal Conquest
2D
4X/Grand Strategy/RTS Hybrid Space Simulation based on principles - and developed in consultancy with - alien contactees.

Alien Rage - Unlimited
Action
Unleash a fury of powerful weapons as you blast your way through armies of Alien forces hell-bent on taking you down! Battle through 14 intense levels and prepare to face a barrage of beastly-sized bosses that will test your every skill. Each of your 10 weapons comes with two firing modes and you’ll need all of them!

Endless Conflict
Indie
Endless Conflict! You will take on the role of different commanders, traversing various environments such as forests, volcanoes, and deserts. Use resources wisely, gather allies, upgrade technology, defeat endless waves of enemies, and destroy enemy defenses.

Infested Planet
Indie
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

Rencounter
Indie
Rencounter is a difficult, turn-based, RPG, roguelike game with a mysterious atmosphere. Help your squad survive while navigating through a network of tunnels and rooms. Distribute provisions and medicine to keep them alive.

UniWar
2D
Turn Based strategy, more fun than chess. Play it. With a vibrant and supportive community, every battle is not just a conquest, but an experience shared among friends.

Archon-9 : Alien Defense
Singleplayer
An exciting sci-fi real-time strategy game. You are the leader of a band of elite Marines on a rescue mission; it is your job to secure the outpost and rescue lost miners. Aliens are running amok; it won't be easy...

Alien Insanity
Indie
Aliens have invaded Earth and these thing are weird. Mechanical steam-powered shells... bipedal robots... flying eyeballs drones... Can this all be real? The aim of each level is simple: Kill all the aliens - then find the exit. 24 mind-bending levels! Create and share mods with the inbuilt level editor.