Natural Selection is an action-strategy game for the PC. It is a "Half-life modification", which means it is written on top of the Half-life game engine. "Mods" are a new sort of underground game development that enables small teams to create games using the technology of existing games. This means less expensive and lower risk game development, which allows experimentation and innovation. This arrangement also implies that "mods" are made as art, not for making money. When complete, Natural Selection will be released for free to all owners of Half-life, which is required to play Natural Selection.

Game summary

Multiplayer-only Half-life mod where one team plays marines and the other plays aliens. The humans must keep their cool and work together to assault an alien-infested spacecraft or colony. Marines vs. marines and aliens vs. aliens scenarios are also supported.

"First-person strategy" with a real resource model and consequences for actions. Both sides are genuinely different and together they accommodate different play styles:

Marines::Fighting skill is less important, strategy and communication take its place. Playing as a marine will be a tense experience with methodical planning and strategy, interrupted with action.

Aliens::Playing as an alien will be an intense action experience, rewarding reflexes and alien heroics. Communication and coordination don't require typing.

Accessible, fast, mouse-driven interface: no keys beyond those used in Half-life needed.

Simple to learn and play, it is hard-core action/strategy for a mainstream audience.

Innovative social dynamics lead to memorable games.

Atmospheric indoor sci-fi environments full of steam, smoke and ambient soundscapes

Natural Selection is out, go get it already! :P

Recent Changlogs:
Version 3.2
Version 3.1
Version 3.0

The team is now working on a version for Half-life II and will post news here when ready.

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media

Natural Selection Source Code Released!

Posted by Hugh
Original news post available here: Unknownworlds.com
Natural Selection Source Code

Back in 2002, Natural Selection was released…

Since then, lots has happened. Unknown Worlds was formed and NS2 was released, reaching multiple times the number of players the original mod did. Charlie, the creator of NS, has come so far that he’s now working on a new game: Subnautica.

But we will never forget what started it all. Today, we are proud to announce that Natural Selection Source Code is now available to anyone, free of charge. Head on over to GitHub to get it. It’s not ‘open source’ – There is some legal hoo-ha that prevents that. But it is all there.

Natural Selection 1

Got balance?

You can use the NS source code to make your own version of the original game, fix problems with it, make new problems, or just see how the game worked.

We hope you enjoy tinkering with it. NS was one of the greatest mods of all time – And we can’t wait to see what you are able to do with it.

Natural Selection source code now available!

Natural Selection source code now available!

News 11 comments

Unknown Worlds released the source code of Natural Selection and it is now free to download.

NS2 Alpha Date Set!

NS2 Alpha Date Set!

News 27 comments

As you all know, we strongly value our ties to you, the community. When we released NS v1.0 after 18 months (games were easier back then!), in some ways...

Design of ns2_tram

Design of ns2_tram

News 8 comments

For today's update we would like to focus on "Tram", one of several maps currently in development. This full sized NS2 map will ship with the Alpha, so...

The Shotgun

The Shotgun

News 58 comments

We thought we'd take a moment to show you the updated version of one of the favorite weapons from NS1 (unless you were a Skulk...) - the Shotgun.

Natural Selection v1.0 plus patch v1.04 (outdated)

Natural Selection v1.0 plus patch v1.04 (outdated)

Full Version 0 comments

It's an old version of NS, dated by 29th October of 2002. Uploaded for historical and collectors' purposes, because it's hard to find on internet now...

Natural Selection v2.0 Dedicated Server (outdated)

Natural Selection v2.0 Dedicated Server (outdated)

Server 0 comments

It's an old version of NS, dated by 30th July of 2003. Uploaded for historical and collectors' purposes, because it's hard to find on internet now. Requires...

Natural Selection v2.0 Client (outdated)

Natural Selection v2.0 Client (outdated)

Full Version 0 comments

It's an old version of NS, dated by 30th July of 2003. Uploaded for historical and collectors' purposes, because it's hard to find on internet now. Requires...

NS 3.2 Hungarian Translation with voices

NS 3.2 Hungarian Translation with voices

Patch 10 comments

The Half-Life mod , called Natural Selection is basicly ENGLISH, but this one is enables the Hungarian Translation. Ha nem értesz angolul, akkor ezt...

Natural Selection v3.2 Installer

Full Version 66 comments

The full client installer for Natural Selection v3.2. Check out the full changelog here.

Natural Selection v3.2 Server

Full Version 7 comments

The dedicated server zip for Natural Selection v3.2. Check out the full changelog here

Post comment Comments  (40 - 50 of 434)
sasuke2490
sasuke2490

steam is good get it to play and to build go gorge and right clik and stuff.

Reply Good karma Bad karma+2 votes
W_Shadow
W_Shadow

ok WTF i cant play the game cause i got half-life 1 SOURCE becasue of the SOURCE are you fu*kin kidding me can this be fixed somehow?

Reply Good karma Bad karma-1 votes
alphamassaka
alphamassaka

Original Half-Life is like, $5. Lmao.

Reply Good karma Bad karma+2 votes
Gandbon
Gandbon

worng half-life. u need old half-life

Reply Good karma Bad karma+3 votes
EDOC_32
EDOC_32

I no like NS!. why??? i no have Steam! and this mod need steam!. please a version NON-STEAM for Natural Selection :)

Reply Good karma Bad karma-2 votes
Lusicore
Lusicore

i play this as non-steam

Reply Good karma Bad karma+3 votes
tschumann
tschumann

I think it relies on functionality that's only available in the Steam version of Half-Life.

Reply Good karma Bad karma+2 votes
KarimIO
KarimIO

Best MP mod ever - I'm really glad it's still very much alive. Can't wait to buy the new version.

Reply Good karma Bad karma+2 votes
sgccode9
sgccode9

I hope some people still play this =/. I just bought HL1 for various mods.

Reply Good karma Bad karma+2 votes
tschumann
tschumann

I think there are a few servers. You can play with bots too.

Reply Good karma Bad karma+2 votes
Far-East
Far-East

How to use bot?

Reply Good karma Bad karma+2 votes
tschumann
tschumann

Depends which bot you're using. They should all come with instructions though.

Reply Good karma Bad karma+2 votes
Schinchan56798
Schinchan56798

There are around 20 servers. It depends on what place you live.

Reply Good karma Bad karma+2 votes
Post a comment

You are not logged in, your comment will be anonymous unless you join the community. Or sign in with your social account:

Icon
Half-Life
Game
Half-Life
Developer
Contact
Send Message
Release date
Mod watch
Start tracking
Share
Community Rating

Average

9.5

456 votes submitted.

You Say

-

Ratings closed.

Style
Theme
Fighter
Players
Multiplayer
Embed Buttons
Link to Natural Selection by selecting a button and using the embed code provided more...
Natural Selection
Statistics
Last Update
Watchers
907 members
Addons
7
Downloads
9
Articles
38
Reviews
11