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Warp
Warp™ is a strategic stealth-action puzzler where gamers play as Zero, a loveable yet lethal, little orange alien with a big score to settle. Abducted by a villainous General from his home world and taken to an underwater research facility, Zero must plan his ultimate escape by relying on his arsenal of special abilities.
Unstoppable Gorg
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Earth Defense Force: Insect Armageddon
Thousands of giant insects and aliens once again ravage the earth, and only the Earth Defense Force can stop them.
Galactic Civilizations II: Ultimate Edition
Get the complete GalCiv II saga including Galactic Civilizations II: Dread Lords, the expansion pack Dark Avatar, and the newest expansion pack Twilight of the Arnor!
Serious Sam 3: BFE
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!
Sins of a Solar Empire: Trinity
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
Alien Hallway
Players measure stamina with a never-ending stream of green creatures within the borders of a special military mission.
Quake 4
As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.
Duke Nukem Forever
The King arrives with an arsenal of over-the-top weapons, giant explosions and pure unadulterated fun!
Red Faction : Armageddon
Red Faction: Armageddon Path to War includes 4 new missions, 2 unlockable items and 10 new achievements!
Anomaly: Warzone Earth
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Crysis 2 - Maximum Edition
Aliens are decimating New York City, only you have the technology to survive. Be The Weapon.
Revenge of the Titans
The ultimate mash-up of Real-time Strategy and Tower Defense!
Dead Space 2
Three years after the Necromorph infestation aboard the USS Ishimura, Isaac Clarke awakens from a coma, confused, disoriented, and on a space station called The Sprawl. Explore this world and its zero-g environments to discover the truth about the Unitology and its role in the Necromorph epidemic.
Alien Breed 3: Descent
Experience the final explosive chapter in the Alien Breed series and uncover the horrifying truth surrounding the existence of the Breed. Launch discount good thru Nov. 24 10am PST.
Alien Breed 2: Assault
Can you survive the alien onslaught? Gamers across the world will now have a chance to play the next chapter in this high-budget, high-quality series.
Alien Breed: Impact
Experience the explosive science fiction arcade-shooter that resurrects a much revered franchise in an epic single player and co-op multiplayer campaign.
Serious Sam HD: The Second Encounter
Serious Sam HD: The Second Encounter is a visually upgraded and fully Steam supported remake of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month!
Aliens vs. Predator
Survive, hunt and prey in the deadly jungles and swamps in distinctly new and thrilling first person gameplay.
Aliens versus Predator Classic 2000
Aliens Versus Predator Classic 2000 features the Colonial Marine, Alien and Predator Campaigns and the frenetic single-player Skirmish mode from the original title: Alien Versus Predator Gold Edition, which was released to massive acclaim in 2000.
Samorost 2
Samorost 2 tells a surreal story of a space gnome whose dog just got kidnapped by mischievous aliens. Set out on a short expedition to rescue the pup, deal with curious strangers and relax to the soothing music by Tomáš "Floex" Dvořák.
Serious Sam HD: The First Encounter
Serious Sam HD: The First Encounter is a visually upgraded and fully Steam supported remake version of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS which was Gamespot's Game of the Year 2001 and which scored overall of 87% on Metacritic!
Alien Shooter 2: Reloaded
This is the unique alloy of arcade action and RPG elements which combines well-established world of classical games and unmatched dynamics of the first part.
Alien Shooter: Revisited
Crowds of blood-thirsty monsters, crawling from every corner of the secret research base. Gloomy basements and modern labs, darkness changing into blazing bulbs. The only usual thing is: you're in a bad place alone, and there's no one to help you!
The Maw
The pinnacle of alien evolution, Maw is a cowardly fat blob concerned mostly with snacking and lounging. He can, however, absorb the traits of anything he eats, is virtually indestructible, and can grow to unlimited size. If he wasn't a danger to all life in the universe, he'd make the perfect pet.
Dead Space (2008)
You are Isaac Clarke, an engineer on the spacecraft USG Ishimura. You're not a warrior. You're not a soldier. You are, however, the last line of defense for the remaining living crew.
SPORE Creepy & Cute Parts Pack
Add horror and humor to your universe. Make grotesque beasts or cuddly critters, then watch them do the robot, zombie walk, break dance and more! Includes over 100 new items. 60 New parts 48 New paint options 24 New animations
Defense Grid: The Awakening
Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.
Crysis Warhead
Pulse-racing new installment from 2007's PC Game of the Year*: Play as Sergeant Sykes and experience a whole new side of the battle. A standard combat mission behind enemy lines becomes critical when you discover your enemies have captured something of vital importance to the ensuing war.
X-COM: UFO Defense
You are in control of X-COM: an organization formed by the world's governments to fight the ever-increasing alien menace.
X-COM: Apocalypse
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.
Lost Planet : Extreme Condition
Driven to the brink of extinction on ice-covered wastelands, humankind fights to survive. Battle to survive against gargantuan alien Akrid and treacherous Snow Pirates on the vast and frozen landscape of EDN III.
X-COM: Terror From the Deep
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.
Insaniquarium Deluxe
The craziest aquarium game ever! Tend to your fish, keep them happy and they'll reward you with coins and jewels. Buy tank upgrades or egg parts which hatch different in-tank pets. These pets can help you feed your fish, collect coins, or even protect against the aliens that will invade your tank.