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.

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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
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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  (660 - 670 of 692)
Lt.SnoWolf Nov 17 2008, 2:37pm says:

Will it still be free? Because i play the old NS alot when im waiting for farcry 2 to update or when i feel like being a wall walking alien :D good mod now its gonna be a good game!

Lt.Snowolf rates this 9000% Awsome cakes!

+1 vote     reply to comment
m82sniper Nov 19 2008, 6:08pm replied:

I think you will have to pay for it.

+1 vote     reply to comment
RockerFox Oct 19 2008, 1:18pm says:

wow amazing
i played NS1 and i loved it and NS2 is shaping up very well keep up the good work.
P.S tracking

+1 vote     reply to comment
Doom-Hazmat Oct 16 2008, 12:43am says:

That engine is looking extremely well. In NS2 Will there still be physics? I'd love to watch a alien rush at me only having a "trip" form as it dies from my repetitive fire. Great work guys. Keep it up. -Tracked-

+1 vote     reply to comment
Flayra Creator
Flayra Jan 30 2009, 1:56am replied:

Yep we have great physics. We have both Bullet and PhysX implemented (we'll probably ship with the latter).

+1 vote   reply to comment
Rogue_Eagle Oct 15 2008, 7:08pm says:

if it's anything like the first it'll probably become the best game in my collection.

+1 vote     reply to comment
Keptron Oct 15 2008, 12:45pm says:

The graphics are monster, it kind of remember me Doom 3 ... Or just saying: Amazing.

+1 vote     reply to comment
VicXxX Nov 26 2008, 9:05am replied:

Dude, Doom 3 graphics are horrible!

+1 vote     reply to comment
Batuea Oct 15 2008, 12:50am says:

O_O the lighting with the blinds in the beginning was jaw dropping, it reminds me of thief, but 1000% better *I mean the lighting effects*. You guys are doing great, finally a mod team that has gone "indie" properly, instead of using another games engine *you guys know what mod I am talking about* you are building your own from the ground up. Also was the mapping tool you were using to demonstrate the lighting effects view during map creation, did you guys custom write that?

+1 vote     reply to comment
hookeyed Oct 10 2008, 2:25am says:

yeah.. they're not using the source engine. developing their own. better change it ;P

+2 votes     reply to comment
vash12788 Online
vash12788 Oct 14 2008, 11:12pm replied:

The developers for natural selection hold all rights to this game and engine that they are developing themselves. Valve never bought them out like they did with CS so the team can do whatever the hell they want with it.

+2 votes     reply to comment
Batuea Oct 15 2008, 12:42am replied:

I think He ment change the Engine description in the profile, as it still saids source :D.

+1 vote     reply to comment
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Natural Selection 2
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Released Oct 28, 2012
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