Whether you play as one of the elite marine Frontiersmen or the vicious alien Kharaa, you must use unique strategies and your abilities to win. Marines buy weaponry and form persistent squads to find and destroy alien hives. Aliens can choose a wall-running Skulk, pudgy Gorge, flying Lerk, murderous Fade or gigantic Onos that can devour enemies whole.

Real-time Strategy
New strategy gameplay allows players to Command from overhead. Build structures anywhere, collect resources and research upgrades. The marines can build phase gates, sentry turrets and siege cannons to assault the enemy. Aliens can build upgrade chambers, evolve special abilities, lay eggs and plant traps.

Dynamic Environments
Levels change as you play. Spreading alien infestation deforms hallways and causes space station power failure, halting all lifts. Destroying a catwalk's supports causes it to fall, revealing a new route. Use a flamethrower to clear infestation, spin webs to block a passage or weld a bulkhead shut for a last defense. Every game is different.

Unlimited Variations
Flexible game rules and scripting allow you to create your own unique scenarios like "Colonist Rescue", "Alien vs. Alien" or anything else you can dream up. Free automatic updates keep the game fresh by adding new levels and abilities.

Image RSS Feed Latest Screens
New Shadow Tier Content New Shadow Tier Content Elite Assault Marine
Blog RSS Feed Report abuse Latest News: Return to Eclipse in Natural Selection 2

2 comments by SgtBarlow on Dec 20th, 2013

Computer Core

Something must be in the air at Unknown Worlds. Not only are we announcing new games, we’ve also started hitting deadlines! We promised you Eclipse at the end of 2013, and with 11 days to spare we are proud to announce that is has been released!

Eleven years ago, Eclipse was one of the original Natural Selection battlefields. Tight corridors, multiple Hive spawns, iconic rooms, Eclipse was one of the greatest maps ever made for the original Half-Life mod.

Marine Start

Now, we can all return to Eclipse. Painstakingly recreated, the map is faithful to the original while allowing for the evolution of Natural Selection 2 gameplay. By taking advantage of Spark’s modern rendering techniques and UWE’s art resources, the mapping team has been able to remake every corner of Eclipse in exquisite detail.


The team that built Eclipse was led by Jake ‘Jonacrab’ Smith. Under the artistic direction of Cory, Jake drew together work from mappers Oliver ‘Dux’ Hobbs, Michael ‘Olmy’ Schouten, Andrew ‘Insane’ Jones, Marc ‘Sgt Barlow’ Newton, and art from Sergey, Dmitry, Yuri and others from Fox3D.

Looking towards East Foyer

Eclipse is included as part of Build 262, which was just released on Steam. Build 262 is free for all existing players of Natural Selection 2, and includes a bunch of other improvements to the game. Here is the full change log:


  • Fixed players sometimes being stuck in command station at round start
  • Fixed Infestation blobs blocking commander view
  • Server Browser now highlights player count yellow if the server is semi-full due to reserved slots.
  • Removed texture streaming option from main menu since it wasn’t doing anything
  • Fixed all structures being outlined blue when on overhead mode as spectator
  • Fixed projectiles colliding with invisible movement collision group
  • Fixed ECHO_HARVESTER tooltip missing when echoing an Harvester
  • Fixed accidental use of voice order keys while ESC menu is open
  • Fixed bug where marine buy menu did not close when player was Stomped
  • Fixed Stab not having a custom icon
  • Fixed round start music not playing due to incorrect path
  • Fixed WhipBomb showing killed with BileBomb in console
  • Fixed loading screens using the wrong art sometimes
  • Fixed commander bindings reverting to default if a player joins a server before opening the options menu


  • Added new map: Eclipse
  • Added new main menu background
  • Added egg counter for Alien Commander in the top of the commander interface
  • Added Hive skill and level stats under name in main menu
  • Added support for new structures in ScenarioHandler. Added one other check path that works.
  • Added link to forums by clicking logo
  • Added remixed NS1/NS2 main menu theme


  • Ammo packs now refill all weapons instead of only the active one


  • Limit hit effect messages to 100 per second
  • Correctly limit max resources network field to 100 per player
  • Reduced network traffic generated by static structures
  • Implemented extra precaching to reduce incidence of hitching at the start of rounds
  • Optimized network traffic produced by Insight spectator system
  • Minor optimizations for skulk movement (optimized wall traces and removed predict wall walking)


  • Insight spectator system now outlines players in overhead view by default
  • Replaced “request enzyme” with “request drifter” in the Alien ‘commo-rose’
  • Servers with cheats enabled no longer send data to the Hive stat tracking system


  • Revert auto-generation of overviews by Builder due to Overview.exe crashes
  • Fixed crash in editor related to file type properties
  • Allow mappers to define custom round start music in ns2_gamerules entity
  • Added console command playmusic. Usage: sound/NS2.fev/pathtosound

Refinery (Thanks SamusDroid)

  • Fixed pathing in Lava Falls
  • Fixed some textures and gaps
  • Fixed some stuck spots
  • Adjusted some death trigger scales
Media RSS Feed Latest Video
Downloads RSS Feed Latest Downloads
Natural Selection 2 HD Wallpaper Set

Natural Selection 2 HD Wallpaper Set

May 13, 2013 Wallpapers 1 comment

Pixels are addictive. There are never enough. More definition, higher resolution, greater pixel density. But what to do with all those high-resolution...

Post comment Comments  (0 - 10 of 692)
NexusRider161 May 1 2014, 2:55pm says:

Heard a lot of good things about this game, but all I want to know is: ARE THERE ANY BOTS?

+1 vote     reply to comment
priyank-k-side Dec 25 2013, 1:00pm says:

wow........way too realistic......Keep up the fabulous work going guys....

+1 vote     reply to comment
ScubaSteve3465 Dec 24 2013, 1:16pm says:

You guys ever plan on adding Combat mode back in? Probably not... for some reason these Devs don't listen to anyone in the community.

+2 votes     reply to comment
Guest Dec 19 2013, 1:17pm says:

This comment is currently awaiting admin approval, join now to view.

stephenmbanham Dec 16 2013, 12:13pm says:

Hey! We're doing an Indie Of The Year special series on the Top 100! And we featured your game!

Check it out? Youtube.com

Thank you so much in advance! and we hope you like the video!

Alot of team effort went into it! So if you could help us out and spread the word we'd be so grateful and thanks again for your amazing game!!!

+1 vote     reply to comment
Mkilbride Oct 16 2013, 3:22am buried:


When will this be...the game we were promised...I'm still waiting.

-5 votes     reply to comment
Guest Dec 5 2013, 2:57pm replied:

Its already so soo soooooo much more than was promised. =D

+3 votes     reply to comment
Dzev Dec 1 2013, 6:22pm replied:

Promised what?

+2 votes     reply to comment
RoguelikesEsp Jul 8 2013, 5:39pm buried:


I Just need to say; The most epic, cool and perfect mod of HL 2. I just love this s*it!

-6 votes     reply to comment
SavageCorona Nov 1 2013, 5:15pm replied:

It's not even a Source game.

+3 votes     reply to comment
WyldStyle Aug 30 2013, 7:50am replied:

It's not a mod it's a standalone game! -_-

+4 votes     reply to comment
Post a Comment
click to sign in

You are not logged in, your comment will be anonymous unless you join the community today (totally free - or sign in with your social account on the right) which we encourage all contributors to do.

2000 characters limit; HTML formatting and smileys are not supported - text only

Natural Selection 2
Windows, Linux
Unknown Worlds
Send Message
Official Page
Release Date
Released Oct 28, 2012
Game Watch
Track this game
Community Rating



146 votes submitted.

You Say


Ratings closed.

Real Time Shooter

Latest tweets from @ns2

RT @NSLNews: There's a div 3 semifinals @NS2 match starting soon. Destiny's Child vs A Certain Vermin over at T.co - go …

Dec 19 2014, 2:57pm

Thanks to hard work by a fantastic group of volunteers, NS2 now supports French, German, Spanish, Polish & Russian T.co

Dec 19 2014, 4:29am

RT @ns2wasabione: BTW if you haven't noticed the @ns2 MEGA Pack is now 75% off T.co pick it up on steam now!

Dec 18 2014, 9:35pm

Natural Selection 2 Update 272 has been released on Steam! T.co T.co

Dec 18 2014, 3:24pm

RT @destructoid: Natural Selection 2 creator's underwater adventure Subnautica hits Steam Early Access T.co

Dec 16 2014, 9:25pm

RT @Subnautica: Subnautica Early Access has been released! Store: T.co Trailer: T.co (Pls RT!) http://

Dec 16 2014, 1:35pm

RT @NSLNews: We're having some issues with the match schedule on our website, so for Sunday's @NS2 matches, look here: T.co

Dec 14 2014, 2:47am

RT @VariXx: Hey! @NS2 is less than $4 on @humble today! T.co

Dec 10 2014, 3:10pm

Insanity. The Natural Selection 2 Mega Pack. Deluxe, Combat & all DLC, for 90% off: T.co T.co

Nov 26 2014, 3:03pm

RT @futureperfgame: Here's a blog post by @max_mcguire that describes what Future Perfect is and where it came from: T.co

Nov 25 2014, 10:54am

Embed Buttons

Promote Natural Selection 2 on your homepage or blog by selecting a button and using the embed code provided (more).

Natural Selection 2 Natural Selection 2
Natural Selection 2
477 of 26,276
Last Update
1 year ago
2,166 members