Natural Selection 2 pits alien against human in an action-packed struggle for survival. Wield devastating weaponry as a Frontiesman marine, or become the xenomorph as a deadly. Kharaa life-form.

Strategy Meets Shooter

Natural Selection 2 is a First Person Shooter and Real Time Stategy game rolled into one! Each team, alien and human, has a Commander. The Commander looks down on the battlefield and issues orders, places structures, collects resources, researches technology, and deploys abilities.



Here are some gameplay examples: A human Commander could drop health packs and ammunition to a trapped marine squad, and deploy sentry guns to help them defend their position. Or an alien Commander could grow a new Hive to spread infestation throughout newly captured territory, allowing more alien eggs to spawn...

Two Unique Sides

Aliens players choose to evolve into one of five lifeforms: The fast, fearsome Skulk can run on walls and deliver massive damage with is jaws. Lerks fly and deploy gasses to support their teammates in battle. Gorges heal other lifeforms and build tunnels, hydra turrets, walls, and other tactical structures. Fades blink in and out of battle, picking off marines with giant scythes. Finally, the giant Onos is so massive and so tough, that even entire marine squads can't take it down.



Marines wield rifles, shotguns, grenade launchers, pistols, and other weapons. Cluster grenades can clear ventilation shafts of sneaky Skulks, flamethrowers make short work of alien structures and infestation, and boosts dropped by the Commander increase combat effectiveness.

When attacking on foot doesn't cut it, marines can construct hulking Exosuits wielding miniguns and railguns, and equip jetpacks for high speed assaults on alien Hives.

Long Term Development

Natural Selection 2 receives constant updates. This year, 2016, Unknown Worlds continues to develop new features, content, and improvements.

Mod Tools Come Standard

Natural Selection 2 comes with all the tools we used to make the game. All game code is open source. That means you can create, and play, an endless variety of mods. Publish, share, and download mods from the Steam Workshop, and automatically download mods when you join modded games.

Digital Deluxe Edition

Digital Deluxe Edition includes:


Official Soundtrack - 1 hour of tribal, industrial music composed by David John and Simon Chylinski
Digital Art Book - 40+ pages of art by Cory Strader, including environments, creatures, weapons and more
Exclusive in-game marine model - Exclusive in-game marine model - A new marine model with custom visor and armor plating
Exclusive Wallpapers and Avatars - Unique views of the NS2 universe by Amanda Diaz

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. With their backs against the wall and staring into the abyss, the tattered remnants of Humanity’s forces must put aside old hatreds and band together as they prepare to make one last desperate stand. One last chance. An alliance forged in blood, steel and hope, they turn to face the dark.
Key Features:
New Playable Faction: A completely new playable faction will be available in multiplayer games and serve as the main threat during the new single-player campaign. This new threat is a cunning and devious race with advanced technology and are true masters of quantum technology. New weapons, new strategies, new conquests!
New Units: 110 new land, sea, air, base and experimental units evolve armies to address strategic weakness or become the ultimate expressions of factional military doctrine.
Warfare on an Epic Scale: Fully realized navies, orbital weaponry and advanced counter intelligence technologies give commanders unprecedented, deadly new capabilities in what is already the most strategic RTS on the market today.
New Multiplayer Maps: New multiplayer battlefields provide new grounds for players to prove their supremacy.
New Single Player Campaign: Play through a brand new single player campaign as you gather your forces to save mankind from extinction.

Europe is in turmoil. The lands are fragmented into petty fiefs, the emperor struggles with the Pope, and the Holy Father declares that all those who go to liberate the Holy Land will be freed of their sins. Now is the time for greatness!
The first expansion, Crusader Kings II: Sword of Islam, will add playable Muslim rulers to the game.
Crusader Kings II explores one of the defining periods in world history in an experience crafted by the masters of Grand Strategy. Medieval Europe is brought to life in this epic game of knights, schemes, and thrones.
"The Ummah is under attack. All true Muslims must be charitable in peace and relentless in Jihad. Let the Sword of Islam fall upon the infidels that threaten our lands, our faith!"
Key Features:

Muslim rulers now playable
Updated interface for playable Muslims characters
Unlocks more than 20 features in the game
New counties and titles
Balance Greed vs. Nobility with the new Muslim Dynasty Decadence System
Polygamy. Allow up to four wives for Muslim rulers.
Story events, starting circa the year 100, such as: The Harem, Shia vs. Sunni, Sufi mystics, Dervishes, The Assassins, Sharia, Wife wants to become first wife
Combat Revisions with new Commander traits for more interesting combat tactics