A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
User reviews:
Mostly Positive (61 reviews) - 73% of the 61 user reviews in the last 30 days are positive.
Very Positive (7,726 reviews) - 84% of the 7,726 user reviews for this game are positive.
Release Date: Oct 30, 2012

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Buy Natural Selection 2

Buy Natural Selection 2 - Deluxe Edition

Buy Natural Selection 2 - 4-pack

Includes four copies of Natural Selection 2 - a copy for yourself and three copies to send to your friends!

Buy Natural Selection 2 Deluxe Edition Upgrade

Upgrade your Standard Edition to the Deluxe Edition!

Items available for this game


Recent updates View all (145)

September 23

Build 309 is Now Live on Steam!

As we announced in last week’s Changelog, we’re releasing a patch this week! This patch contains all the tweaks and updates we held back from build 308, in favor of having more time to solely focus on the issues that came up after the LUAJit update.

Included in this update is the brand new Marine Commander tutorial. This will teach potential new commanders the basics of commanding and the marine tech tree. So if you wanted to get a basic understanding of commanding without being in a live game, there is now a way to do so.

But that’s not all! Thanks to the tremendous work of Trevor, with the help of a group of volunteers from the community, the new tutorial is packed with more easter eggs and secrets to discover. So even as a veteran commander it’s worth giving it a shot, if only just to unlock the new achievements!

We’ve been listening a lot to the community’s feedback about the current balance situation and the performance issues that have been showing up since the last few builds. With this build we started including changes which are trying to resolve some of those issues that were brought up. More improvements will follow in the future.

Meanwhile the team is still working on items from our roadmap that remi posted two weeks ago.

There is much more to come for NS2 on the horizon, so stay tuned and happy hunting!

Update 309 Changelog


  • Skulk HP raised to 75/10 (was 70/10)
    The intent of this is to make early game skulks a tiny bit less fragile and to make early game engagements more stable (the innate regen threw a RNG factor into those engagements)
  • Machine Gun changes
    • MG research time halved to 30 seconds (was 60)
    • Decreased MG spread to 4 radians (from 4.5)
    • Increased magazine size to 125 (from 100)
The MG is primarily designed to give Marines a chance to hold and extend their territory in the late mid game. The MG wasn’t really able to do that in the past. Halving the research time should help get it on the field before it’s too late. Furthermore decreasing the spread and increasing the magazine should make it reward players better for good positioning.
  • Railgun damage type changed to Structural (was normal, railguns now do double damage vs structures, and have no change vs players)
The Railguns can be fun to use against alien players, but at it’s current damage numbers it took 2-4 shots to pop a cyst which made it feel very underpowered. Doubling their damage output to structures will help give them more utility.
  • Marines now can’t turn their upper body as far to the right, without also turning their lower body (this makes it easier for aliens to tell which direction a marine is facing)
  • Marines now use a different animation while jetpacking, rather than the jumping animation
Tweaks / Improvements
  • New Commander Tutorial now available in the training menu!
    • Two new achievements added related to the commander tutorial
    • Removed the “commander help” in-game tutorial
  • Improved bot server performance by adding a tick rate for the bot logic routine which is set to 10 by default
    • This should lower the impact of bots onto the server performance by at least 50%
  • Updated the bot name list including more recent contributors
  • All serverbrowser filter act now the same way: Enabled will show given servers, disabled will hide given servers. Old filter settings are converted
  • The “full server” serverbrowser filter will now also take reserved slots into account
  • Added the server admin command “sv_rookieonly” to change the rookie only state of a server without requiring a map change or server restart
  • Replaced the server runtime error (SRE) icon when a script error occurs on the client with something prettier
  • Added another diagnostic icon which will appear when a script error occurs on the server (it’s purple!)
  • List the exact number of script errors that occurred on the server in net_stats and the client log
  • Windows servers now automatically save a mini memory dump into their log folder on crash (if your server crashes please send this to us so we can help diagnose it)
  • Fixed that the subscribed mods did not show up in server details window
  • Fixed that the rookie only check didn’t work on most rookie-only servers (this was previously deployed via the extension system)
  • Fixed that the buttons of popup that showed up when a non rookie tries to join a team at a rookie only servers did not work
  • Fixed that you could get stuck in place if you attempted to evolve a trait twice before turning into an egg
  • Fixed a script error in the alien commander bot routine
  • Fixed a small performance issue in the scoreboard update routine
  • Fixed that numbers in the options menu were too precise
  • Fixed that the pistol slide was not staying open when the gun is empty
  • Fixed that blink effects could cause visual artifacts when bloom was enabled
  • Fixed that protolab could cause blow out while being biled if bloom was enabled
  • Fixed that spectators could end up spectating non player entities in a rare case
  • Added the ability to lock the view horizontally with the space bar in film mode (Thanks Samus!)
  • Added ability to communicate with Webviews (Lua <-> Javascript)
    • WebView::ExecJS allows Lua code to call javascript inside the webview
    • WebView::HookJSAlert allows Lua code to respond to any Javascript alert( message )
  • Added Client.GetNumServerScriptErrors() to get the number of script errors that have occurred on the server (since map change)
  • The spread vectors table of the shotgun is now referenced via the class to make them easier to mod
  • Improved the Lua TraceLogger error messages to include more details
  • Viewer
    • Added JSON Export to Animation Graph editor
    • Improved Animation Graph editor visuals by highlighting incoming and outgoing lines from the selected node different colors.
    • It’s now possible to have one-way labels in the Animation Graph (animation state can jump out of this node to other nodes of the same label, but can only be entered by discrete connections)
  • Model Compiler
    • Fixed an issue that could cause models’ scaling to be strange when playing animations.
    • Fixed a bug that would cause cameras to not load properly.
  • Fixed possible crash on exit due to bad access in FMOD dll (when using Spark’s tools)

13 comments Read more

September 19

Natural Selection League, Season 10!

We'd like to take a moment and shine a light on our partners over at the Natural Selection League. Sign-ups are under way for season 10 of great competitive NS2 action and we couldn't be more excited! Below is all the information and links you might need to get involved with the next season, so gather your friends, create a team and get in on the action!

New to the ENSL?
Welcome to the Natural Selection League. If you’re looking for getting more out of your Natural Selection 2 experience, look no further. Power plays, crackpot strats, and the greatest competitive minds of Natural Selection 2 converge here to duke it out on the battlefield. Talk strategy, metagame, and high-level concept Natural Selection 2 on our forums, or enjoy a gather and fight to the top of the food chain. If you’re looking for more information, check the bottom of this post.Any questions can be directed to our help desk or by messaging an admin on ENSL, Steam, by email or Discord. A full list of current admins can be found here.

Brace yourselves, Season 10 is upon us! But.. we will be extended the deadlines for signups for two weeks. The signup deadline for Season 10 is now October 13th. We want the potential to seed a lower division as high as possible, with the intent of more and better matches. A reminder to sign-up if you haven’t already, as time is ticking!For all new players, you need a team of at least six players to compete in Season 10, please read the final section of this post on how to create or join teams.

Gathers have picked up steam and are running again. You can join a gather by registering an account and joining up here. Joining is easy, and practice can come in handy for the upcoming Season 10. Be sure to play more rounds to familiarize (or refamiliarize yourself on Mesh (formerly Docking2), Nexus, and Mineral, as these custom maps are staples of an ENSL season, and some have changed for the new Season.

Map Tests
Some of our mappers have come forward concerning high-level gathers on ns2_ayumi, a reimagining of the Natural Selection 3.0 map of the same name. Huge changes have happened recently with the map concerning balance, and feedback is necessary. Contact Kasharic or Mephilles for more information. If you have another map you’d like to see played in gathers, contact an admin.

Joining the ENSL
If you don't have a team or have yet to join the ENSL, it's easy to create an account or team with the following steps. If you want to register a pre-existing team, skip to step 4.
  • To create a team, register an account and create a new team! Creating a team is not necessary, nor is joining a team. If you’re looking to join a team, find a team and select the Request to Join button on their page. You’re free to use the ENSL website without any pressure from any teams.
  • Get your players to register and tell them to Join your team in their Agenda, which you can find at the top of the page! You can meet players in-game, in ENSL gathers, or on the ENSL or Unknown Worlds forums. As per usual ENSL rules, you must have at least six players for a valid Season 10 team!
  • To accept your players on the team, go to Agenda → Click your team name → Edit and scroll down → Members → Change their status from Joining to Member, Leader, or Deputy. These roles can define what a player is to your team.
  • To join the tournament, go to Agenda → Click your team name → Edit (scroll down) → Contests → Join Season 10 Signups. This will reserve your space in the upcoming Season 10. Get ready to rock!
  • Verify that your team name exists on the Contest page. If your team does not appear here, please follow these steps again. If all else fails, contact an admin.

4 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, 2016, 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 32-bit
    • Processor:Core 2 Duo E6700 (2.66 GHz) or better
    • Memory:3 GB RAM
    • Graphics:DirectX 9 compatible 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
    • OS:Windows 7 64-bit or newer
    • Processor:Core 2 Quad Q6600 (2.4 GHz) or better
    • Memory:4 GB RAM
    • Graphics:DirectX 9 compatible 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
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Mostly Positive (61 reviews)
Very Positive (7,726 reviews)
Review Type

Purchase Type


Display As:

(what is this?)
4,978 reviews match the filters above ( Very Positive)
Most Helpful Reviews  In the past 30 days
28 of 45 people (62%) found this review helpful
Not Recommended
17.4 hrs on record
Posted: September 1
This is an amazing game, don't get me wrong. Its pure awesome, its experimental, its fun and its complex. Saying that however, I would not recommend this game. Its an assymetrical alien vs human game with a mix of RTS thrown in, this is a team game, a very awesome teamgame, you won't find a generic shooter here.

However Tthe playerbase declined severly many years back, and it wasn't its complexity or difficulty that killed it, not even close. It was the games performance and optimization. I haven't played this game in a long time, but it ran terribly, I know this has been largely fixed but this was an issue that plagued this game for FAR too long.

I believe thats what killed the game, waiting for a few minutes to load into a match made the game infuriating for to play, it simply made people less eager to play it, thats why i stopped and thats why many of the people i played with, stopped. If you want to play this game check which servers have active players on the forums, I live in SA and its not possible for me to play without 300+ ping, so if you live in asia, africa, australia, south america or basically anywhere other than the EU and america, there are probably no active servers.

This is an AMAZING game, but the solutions were too little, too late. This game needed some sort of massive promotion to renew interest, but now its simply faded to irrelevance. The devs moved on as well, they moved on to subnautica.

So no, do not buy this game unless you know there are servers where you live, either wise you'd be buying a multiplayer game with nobody to play with.
Was this review helpful? Yes No Funny
8 of 9 people (89%) found this review helpful
13.0 hrs on record
Posted: September 14
Great game and what pvp is all about. Every mission and map is played differently which adds to the randomness needed in today's pvp. I do not know I missed this gem!
Was this review helpful? Yes No Funny
6 of 7 people (86%) found this review helpful
48.4 hrs on record
Posted: September 7
This is a really good tactical game, I greatly recommend this for people that like to play tactical shooter and RTS
Was this review helpful? Yes No Funny
9 of 13 people (69%) found this review helpful
150.4 hrs on record
Posted: August 31
The only issues this game currently has is player base. Everything else is perfectly polished.
Was this review helpful? Yes No Funny
5 of 6 people (83%) found this review helpful
1 person found this review funny
Not Recommended
80.2 hrs on record
Posted: September 23
Despite it's age, NS2 looks very nice and runs beautifully, which wasn't always the case. The game is definitely the most stable it has ever been, in terms of performance.

Despite showing some age, and having a pretty ancient netcode which results in many "round the corner" type deaths, NS2 is still a very enjoyable experience and a great game to fill up a night or two.

However, the community has problems. First off, the game is dead. NS2 will host an average of 250 players daily, if it's lucky. This means you'll be playing the same people, which can be a good or bad thing depending on how good you are at the game, and your standing with everyone. Be friendly and try not to alienate anyone because of this, as you'll probably only have 2-3 servers at most to choose from. If you get banned from them, or make people hate you, you will literally be screwed out of playing this game ever again.

If you are looking to pick this game up to play with friends, I sadly recomended that you reconsider. Once you and your friends reach level 5, and you are no longer able to play on the few 'Rookie Servers', you'll be pingeonholed into one of the two servers remaining - where everyone votes for "skill based teams" that will result in you being placed on the opposite teams than your friends.

You'll go from having fun playing with your buddies on the team you want to play on - to having the game constantly dictate itself to you with it's constant restrictions and lack of care for your playstyle. You like playing aliens? Chances are you'll be forced marines more often that not and you'll have to sit through rounds of drudgery just to play what you wanted in the first place. By then, you won't even care.
Was this review helpful? Yes No Funny
5 of 6 people (83%) found this review helpful
730.7 hrs on record
Posted: September 18
A multiplayer experience that can be difficult, but extremely rewarding.

My favorite thing to do is become a gorge and build stuff for the commander and defend/heal my teammates. It's rewarding to use in-game voice, and the community is a step above other gaming communities, rivaled only by EVE in my view.

It's easy to pick up, easy to put down.
The rounds can be insanely intense and enjoyable and is pure ecstasy when you're doing well. It could seem like it's the final moments for your team, and then a few people make good decisions and plays and the game turns around..

The game has extremely high highs, and moderately low lows.

Rarely the experiences are bad, I recommend this game for most people. It's not just an FPS you shoot people in, there is a great degree of nuance, variety, and fun for both marines and aliens.

The game is cheap ($10) and is very much worth the purchase, it is one of my all time favorite games.
Was this review helpful? Yes No Funny
6 of 9 people (67%) found this review helpful
3.0 hrs on record
Posted: August 31
A follow on from its predicessor. Fun, you might be suprised that you love it.
Was this review helpful? Yes No Funny
1 of 1 people (100%) found this review helpful
46.6 hrs on record
Posted: September 28
This is a fun game that promotes team work

That said it will also support you if you want to be a badass just not as much...

It is a basic alien vs. marine shooter PvP.

The aliens are harder to play.... because there different. The balance feels off for a while however its actually pretty good.

The twist in the game is the commander, possibly the harder part of the game. It is the commanders job to support and build the team while providing instructions and encouragement.

This game kind off realise on communication and you really should have a headset to play it, its not required but is much better if you can talk to people.

I would recommend this game, however its player base is starting to trail off and it doesn’t look like it’s going to gather momentum again.

So feel free to play, it is fun but look at the player stats to see if there is anyone still playing before you buy!

Was this review helpful? Yes No Funny
2 of 3 people (67%) found this review helpful
13.8 hrs on record
Posted: September 9
The POV of the aliens is something ive only seen in the aliens vs predator game which is also really sick. definitly worth it id still recommend buying it on ♥♥♥♥♥♥♥ for 5 bucks.
Was this review helpful? Yes No Funny
1 of 2 people (50%) found this review helpful
48.0 hrs on record
Posted: September 20
It's fun fam. Play it.

Also teamwork and talking to eachother is a must.
Was this review helpful? Yes No Funny
Recently Posted
4.8 hrs
Posted: September 30
I like this game, it runs good with okay graphics.
Helpful? Yes No Funny
19.2 hrs
Posted: September 29
awesome rts/fps mix. great atmosphere, nice graphics and (finally) good performance! it now runs smooth, even on my 7 year old rig! and that on linux too :)

played on Opensuse 13.2 with Nvidia GTX 275
Helpful? Yes No Funny
Lil2 could be playing ns2 or OW
5.0 hrs
Posted: September 29
Amazin' 11/10
Helpful? Yes No Funny
la anguila loca
27.3 hrs
Posted: September 27
only 24max players on a server
Helpful? Yes No Funny
5.2 hrs
Posted: September 27
this is the most amazing game yet
Helpful? Yes No Funny
Professor Toothy
17.0 hrs
Posted: September 26
One of the last deep multiplayer games on the market. A game that actually requires teamplay and communication.
Even after all of these years, the game still looks great, runs great and now loads faster than ever.

If you think you're good at games, buy this. You deserve a big kick to the teeth.
Helpful? Yes No Funny
79.7 hrs
Posted: September 26
no, the aliens eyes are not in there mouth....
Helpful? Yes No Funny
12.9 hrs
Posted: September 26
Is good
+You human , you shot alienz
+You alien , you bite humins
+Teamplay intensifies
+Tactical RTS commander ♥♥♥
+Izi peaz to learn hard to master

-snowbally even without snow
-onos is gay
-press f to sprint

ign 6/10 would play again
Helpful? Yes No Funny
3.4 hrs
Posted: September 25
It's got really fun multiplayer but it's kind of like the free game evolve just 8v8 not 4v1 it might be a dead game i haven't played it in quite a while.
Helpful? Yes No Funny