A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
Recent Reviews:
Very Positive (94) - 80% of the 94 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (6,270) - 85% of the 6,270 user reviews for this game are positive.
Release Date:
Oct 30, 2012

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Recent updates View all (171)

April 26


What has build 327 Unearthed? A lot actually! This new update to NS2 includes a new map, changes to existing maps, new skins, new models, new sounds and new gameplay and balance changes. All told the changelog for build 327 came to be 10+ pages once we included everything. There is so much in this update to sink your teeth into, read ahead for all the details or just jump in game and figure out all the changes in battle. People playing on the new map Unearthed will receive a new alien commander skin and if you like that you might also check out our Catalyst DLC Pack, which has many other skins and now includes a new Sandstorm skin for the updated machine gun model. Remember all sales of NS2 and DLC directly affect our development budget and allow our team to continue work on NS2.

Click here to see the full changelog and all the goodies contained within.
Follow the NS2 Development Roadmap to see our plans for future updates.

108 comments Read more

December 21, 2018


Update 326 includes crash fixes, changes to quickplay, spectate updates, bug fixes, and new cosmetics to the Catalyst Pack. In honor of Gorgemas, everyone who has purchased the Catalyst Pack DLC will receive new gorge toxin skins for all the gorge structures. If you don’t own the Catalyst Pack, you can still purchase it and unlock all the DLC skin packs included. Remember all sales of NS2 and DLC directly affect our development budget and allow our team to continue work on NS2.

From all of us at Unknown Worlds, we wish you the happiest of holidays and Merry Gorgemas!

Check out the full changelog below to see all the goodies contained within.
Follow the NS2 development roadmap to see our plans for future updates.


Tweaks / Improvements

  • Added Toxin skins for all the Gorge structures.
    • Hydras
    • Babbler Eggs
    • Babblers
    • Clogs
    • Gorge Tunnels
  • Disabled LuaJIT’s trace stitching to try and resolve in game client crashes.
  • Reduced the size of the server performance fields in the move packet to lower the overall bandwidth consumption (Contributed by Steelcap)
    • This is something that will become more robust in the coming patches, further reducing server bandwidth. A requirement if we are to increase server rates.
  • You can now block servers in the server browser and in the scoreboard:
    • Blocked servers are only listed at the very bottom of the server list by default. (custom sorting preferences such as sorting by ping will undo this)
    • The server entries of blocked servers are grayed out.
    • Quick play will skip blocked servers.
    • You can manage the blocked servers via the Blocked server tab in the server browser, next to the History tab.
    • Similar to adding a server to your favorites while in a server, you can utilize the scoreboard to click on the Block icon at the top of it.
  • Quick Play now lists the amount of servers it skipped.
    • The reasons why a server may be skipped because they are full, passworded, rookie only, blocked or the server operator opted out the Quick Play feature.
  • Quick Play will no longer connect you to a server you disconnected from in the prior 10 minutes, unless there are no other servers available.
    • Joined a server you did not like? Quickplay will try to avoid it next time.
  • Improved the overhead spectator mode:
    • Added a binding legend to the bottom of the overhead spectator HUD
    • You can now focus a player by just clicking on them
    • Hovering over a player status panel at the sides of the screen will display the hitpoint values.
    • Hovering over a structure with passive abilities will display it’s radius if it has any.
    • Added health bars for non-standard dropped weapons displaying the time remaining until they expire
    • Added the name of the target location to the unit status of Phasegates and Gorge Tunnels for overhead spectators.
  • Removed the 32 bit OS main menu warning.

  • Fixed that Gorge ghost placement models (such as a hydra or clog before it is placed) were color highlighted incorrectly by the default Alien Vision.
  • Fixed that certain mods like NS2+ caused the main menu to not load after failing to connect to a server due to a consistency failure.
  • Fixed reflections being too intense due to recent changes.
    • Reflection shininess is now back down to sane levels.
  • Fixed that the ping server browser filter was applied even when it wasn’t visible at lower resolutions.
  • Fixed that the Ranked server browser filter wasn’t applied to custom gamemode server. This caused some players to believe that certain custom gamemode servers are ranked while they are not.
  • Fixed that the serverbrowser’s attempt-to-join-full-server dialogue mentioned reserved slots even when none were available.
  • Fixed that clicking on servers in the history tab that were no longer available could cause a script error.
  • Fixed small visual issues in the Tram and Eclipse menu backgrounds.
  • Fixed that sometimes the user’s server Favorites were not saved correctly.
  • Fixed a rare server crash related to relevancy portals that would occur when the server was struggling.

  • Fixed stuck spot in a vent from Observation to Hangar Bay
Eclipse Menu
  • Fixed flipped text
  • Map Editor
    • Added selection masks for ambient_sound and reverb entities.
  • Rendering Pipeline
    • Changed how the GBuffer stores normals and gloss data.  
      • Shouldn’t notice any visual difference!
      • Normals now stored with only 2 components (x, y).
      • Gloss is now stored in the z component of the normals buffer, instead of the alpha channel of the spec buffer.  This allows gloss to be properly blended with decals (before, gloss would be discarded, as the alpha channel of the texture is used as the blending factor).
Known Issues
  • There are still some FMOD related crashes that are being looked into, that represent roughly 20% of known crashes, that mostly occur upon launch or exit of the game.
21 comments Read more


"NS2 is a genius mash of Counter Strike and Starcraft"
"This is getting close to my idea of the ultimate game"

About This Game

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

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 its 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, 2019, 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

System Requirements

    • OS:Windows Vista 64-bit or newer
    • Processor:Core 2 Duo E6700 (2.66 GHz) or better
    • Memory:4 GB RAM
    • Graphics:DirectX 9 compatible dedicated video card with 1 GB VRAM and support for Shader Model 3 (e.g. AMD X800, NVidia 8600 or better)
    • DirectX®:9.0
    • Hard Drive:12 GB HD space
    • Other Requirements:Broadband Internet connection
    • OS:Windows 7 64-bit or newer
    • Processor:Core 2 Quad Q9650 (3 GHz) or better
    • Memory:8 GB RAM
    • Graphics:DirectX 9 compatible dedicated video card with 1.5 - 2 GB VRAM (AMD 5770, NVidia GTX 450 or better)
    • DirectX®:9.0
    • Hard Drive:12 GB HD space
    • Other Requirements:Broadband Internet connection

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