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.

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Blog RSS Feed Report abuse Latest News: Natural Selection Source Code Released!

2 comments by JPolito on Jan 23rd, 2014

Natural Selection Source Code Released!

Posted by Hugh
Original news post available here:
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.

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Natural Selection v1.0 plus patch v1.04 (outdated)

Natural Selection v1.0 plus patch v1.04 (outdated)

Mar 26, 2013 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)

Mar 26, 2013 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)

Mar 26, 2013 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

May 18, 2009 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 töccsed...

Natural Selection v3.2 Installer

Natural Selection v3.2 Installer

Mar 2, 2007 Full Version 65 comments

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

Natural Selection v3.2 Server

Natural Selection v3.2 Server

Mar 2, 2007 Full Version 7 comments

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

Post comment Comments  (420 - 430 of 436)
MooMoo_the_SnowCow Aug 4 2002, 12:03pm says:

This mod imho is going to be the best mod around for along time to come when it is realesed. I have been following it for awhile and am happy that it is almost done.

+1 vote     reply to comment
Ratend3R Aug 1 2002, 4:19pm says:

I think I have to install Halflife again just for this mod :D

+1 vote     reply to comment
idolminds Jul 30 2002, 2:07am says:

All I can say is that this is one of my top 5 most wanted mods. I just cant wait to play.

+1 vote     reply to comment
A|{i|2A Jul 29 2002, 5:00pm says:

This is the first time ive checked this MOD out and it looks pretty profesional its a fresh new idea and the gamplay looks superb ill give this MOD a thumbs up

+1 vote     reply to comment
Mr.Magnetichead Jul 28 2002, 7:01pm says:

Cant wait :D

+1 vote     reply to comment
Qetu Jul 25 2002, 4:07am says:

New concept + good gameplay (/hopes) = a winner

+1 vote     reply to comment
Comprox Jul 24 2002, 2:51pm says:

I saw this mod appear on here a few days ago and it seems to be well taken by the users!
I do have some more info on this mod, if you want to take a look at there is a ton of news, shots and videos there for you to take a gander at. That site is run by the crazy MonsE (the man who posted this mod on the DB here).
And just a shout out to the guys making it, I know this has been said before, but damn nice work guys!

+1 vote     reply to comment
Blahman Jul 24 2002, 11:38am says:

These are stories from the playtesters, which give you a good idea of how the gameplay will be. Some amazingly scary, funny, and just downright awesome stuff in here.

+1 vote     reply to comment
azzDB Jul 24 2002, 2:08am says:

This will pwn

+1 vote     reply to comment
HuntEr Jul 22 2002, 6:43pm says:

I think this new game Battlefield 1942 may take over the internet when it gets released.

2 other mods that will pwn are Starship Troopers, the english version, if it ever gets going again, love that mod.

and Operation Red Falcon, it looks so so sweeeet. I just love it, check them both out on moddb

+1 vote     reply to comment
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Released Jun 3, 2007
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