Natural Selection 2 is the sequel to the popular Half-Life mod Natural Selection. It is built on our own engine and will be distributed through Valve's Steam platform.

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Today is a big milestone for Unknown Worlds: we've just released the NS2 "Engine Test" to everyone that has pre-ordered the game!

Posted by _Xero_ on Apr 10th, 2010

Today is a big milestone for Unknown Worlds: we've just released the NS2 "Engine Test" to everyone that has pre-ordered the game!

This is the first version of the game and game engine where you can run around on a couple small maps and fire the rifle at animated dummy targets. It isn't supposed to represent gameplay for NS2 (or really, any gameplay at all!) but serves to help us test our technology to make sure we get it running smoothly on a wide variety of computers.

We've built a couple small maps which give you an idea for the art style, look and atmosphere that will be present in the game. You'll spawn as a marine with your rifle and be able to explore and fire at pop-up targets. You'll be able to connect in multiplayer as well, although it doesn't include any game code yet. It also includes the main menu and the first of our music, which will start to give you an idea of the overall look and feel of the game.

Our main goal of the Engine Test is just that - to test the engine. There is a bewildering array of PC hardware and configurations out there and with no in-house testing or QA team, we want to get feedback from you guys to make sure the game runs smoothly for you. There are bound to be problems, but as with our many Editor and Spark SDK releases, we were able to fix problems much faster with feedback and users then if we kept everything to ourselves.

We expect the majority of feedback to be in the graphics performance and graphics compatibility areas but feedback of any kind will be quite helpful for us. Much more of the game is working than what we are releasing initially, but we also need to take it one step at a time.

Download NS2 Engine Test

We hope you enjoy this first look at the technology behind NS2 and are looking forward to your feedback!

Post comment Comments
Armageddon104 Apr 10 2010, 4:44pm says:

Woot! Gonna go play now!

0 votes     reply to comment
Colossal Apr 10 2010, 4:51pm says:

The bad thing about this is, some people don't know if they can run it (I can, but let me finish), and they don't want to preorder unless there's a demo or something. And they can only get an engine test if they preorder. So they're stuck.

But yeah, can you add it to Steam soon? Because I don't want to preorder unless it's directly from Steam.

+7 votes     reply to comment
leiftiger Apr 10 2010, 4:58pm replied:

I thought it was added already? When I started the engine test, steam popped up immediately with the steam ingame thing...

+1 vote     reply to comment
Colossal Apr 10 2010, 5:02pm replied:

Search "Natural Selection" on Steam. The only result that is related is the first game, which was a mod.

+1 vote     reply to comment
Cyahnidde Apr 10 2010, 5:58pm replied:

You can't buy it on steam, but to open the engine test you gotta open steam and it auto connects to the steam servers and uses your steam account.

+2 votes     reply to comment
Ark_ Apr 10 2010, 5:09pm replied:

They will probably release a demo when development gets further along. At the moment this is an engine test after all.

Just tried the test looks like a great engine, keep up the good work.

+5 votes     reply to comment
spellman23 Apr 11 2010, 1:04am replied:

The game has been confirmed to be linked into Steam, but it is not on sale nor is there a free demo out yet. It is still fairly early building, and many real gameplay features were stripped out of this engine test build.

So, feel free to test if you've pre-ordered (and be ready to test, it's fairly buggy/raw). For the rest, chill out and wait for upcoming news.

+1 vote     reply to comment
Vcc2cc Apr 10 2010, 5:34pm replied:

That's how I feel.

I LOVE NS. But I'm afraid my money may be wasted on a game that is very different from the first. The alien commander, changes to Gorge and Lerk are all nice and seem more class-specific than before, but is it going to be fun to play now that aliens are less able to be rouge as before?

I'd really like to just be able to walk and shoot around as a Rine and get the feel of it. Then I could decide to buy it or not. Hence- a demo!

+1 vote     reply to comment
MortRouge Apr 11 2010, 8:03am replied:

Preordeing directly from steam means less money for the devs... Think about it.

+3 votes     reply to comment
JohnnyMaverik Apr 11 2010, 6:04pm replied:

Yea but it also gives people a sense of security. Hey, you can argue that it's only psycological and means litte/nothing, but those people won't buy it unless it's on steam and then through steam regardless.

Also the benefits of having your game on steam in the amount of extra attention that attracts, compared to the fairly reasonable (or so I've been lead to believe) cut that steam takes from your profits, are massive.

So yes, the devs will make more money from your single purchase if you buy it directly, however if you buy it through steam, and play it, and love it, and your friends see you playing it and hear about you loving it, and some of them buy it to see what you're on about, and then some of their friends buy it... well you get the picture. I know most of my mates would be fairly open to any suggestions for cool games I've bought from steam, but would almost certainly not buy a game I'd found, from their eyes, fairly randomly and obscurly tucked away on some dev who they've never heard of's webpage.

+2 votes     reply to comment
xXMaNiAcXx Apr 10 2010, 5:01pm says:

Wow, really nice, but well, make this also buyable in retail stores in Marília/Brazil.
And btw, I loved the menu :o

+1 vote     reply to comment
Radu_IceMan Apr 10 2010, 5:44pm says:

I'm gonna record some gameplay. So far, it runs pretty smooth.

+1 vote     reply to comment
Spooboy Apr 10 2010, 6:45pm replied:

That would be very nice, thanks!

+1 vote     reply to comment
Metalspy Apr 10 2010, 6:05pm says:

It's running pretty good here (Intel core2duo E6850 3 GHz, 8GB RAM, GeForce 8800GT 512MB) and I've already had some fun with editing scripts. The absence of anti-aliasing kinda made my eyes bleed though D:

+1 vote     reply to comment
Dr.Worm Apr 10 2010, 7:37pm replied:

they still have time to add features looks really good so far with out it

+2 votes     reply to comment
Metalspy Apr 11 2010, 7:05am replied:

I don't think it looks "really good" without AA.. I don't know the resolution you're using, I'm using 1920*1080 and I thought it was pretty annoying and distracting :/ If they don't add AA in the full game I'll obviously just have to live with it though. The rest of the graphics/game looks and sounds great.

+2 votes     reply to comment
spaqin Apr 11 2010, 12:06pm replied:

Force AA in ForceWare?

+2 votes     reply to comment
Metalspy Apr 14 2010, 4:28pm replied:

Hmm yeah that works, nice and thanks.

+1 vote     reply to comment
Raneman25 Apr 10 2010, 7:15pm buried:


Not optimized for ATI, and some poor collision detection to boot.
You guys gotta get your priorities straight, but I'll let you pass because this is nice for an Alpha.

-5 votes     reply to comment
leilei Apr 11 2010, 12:22am replied:

That's the whole point of an engine test, bucko! It ain't no alpha!

+4 votes     reply to comment
MrMattWebb Apr 10 2010, 7:21pm says:

This looks cool

+1 vote     reply to comment
lethal_vortex Apr 10 2010, 7:57pm says:

nice downloading:D

+1 vote     reply to comment
zpendam Apr 10 2010, 10:01pm says:

this is too awesome!

+1 vote     reply to comment
Dan911 Apr 10 2010, 11:02pm says:

love whens devs do **** like this ++

+5 votes     reply to comment
spellman23 Apr 11 2010, 1:02am says:

Basically, only try this is you're in the mindset to test and find bugs. Because there are bugs. And not much gameplay.

Also, you may want to read up on the current common bugs, like the fact that fullscreen doesn't seem to work for most people.

That being said, it's pretty awesome and people are already modding in features:

+1 vote     reply to comment
MCDT Apr 11 2010, 1:29am says:

Running smoothly on my 5850, Phenom II, 4GB DDR3 at 1280x1024 with max settings.
Fullscreen also working.

+1 vote     reply to comment
SinKing Apr 11 2010, 4:07am says:

the download link above isn't working for me.

+1 vote     reply to comment
Radu_IceMan Apr 11 2010, 5:14am says:

Okay guys.

Here's the menu:
First range map:
Second range map:

Everything was recorded with fraps, so if you see occasional lag it's because of that.

My PC specs:
Processor: Intel Pentium(R) Dual-Core CPU E5200 (2 CPU's) 2.5GHz
Memory: 2048 MB RAM
Video card: Nvidia GeForce GTS 250 (512 MB)
Resolution: 1680 x 1050 (32bit)
Operating system: Windows 7 Ultimate
DirectX version: DirectX 11

+2 votes     reply to comment
ÐiamonÐ Apr 11 2010, 5:20pm replied:

Thank you for recording and uploading these, Radu.

+1 vote     reply to comment
BRKNnode Apr 11 2010, 6:04am says:

YAY! so glad I preordered..

+1 vote     reply to comment
Replic_nl Apr 11 2010, 7:03am says:

Wow, nice work, looks good!

+1 vote     reply to comment
RogerRamjet Apr 11 2010, 8:50am says:

Congrats guys... well done.. downloading now...

+1 vote     reply to comment
Ichiman94 Apr 11 2010, 9:32am says:

"help us test our technology to make sure we get it running smoothly on a wide variety of computers."
i will test on my comp if i will have time:
2,4 GHz intel celeron
512 ram
geforce 3 ti 200...

+1 vote     reply to comment
Kamikazi[Uk] Apr 11 2010, 10:44am says:

Nice love the menu.

+1 vote     reply to comment
Deviation Apr 11 2010, 3:13pm says:

I can't wait for this game after the new AvP was such fail.

+3 votes     reply to comment
Mars_3K Apr 12 2010, 12:18pm replied:

tell me about it -_-

+1 vote     reply to comment
slayersarge Apr 11 2010, 3:24pm says:

This game runs quite smoothly and seems to be in good shape. Can't wait to get to use the other weapons.

+1 vote     reply to comment
Awesome_ninja Apr 12 2010, 1:58pm says:

It's the first game that have a mod even before the alpha is released xD... I am talking about the DM mod that is already online and working, you should check it out
Oh and, great to test NS2 engine personally which rocks as predicted xD

+1 vote     reply to comment
Aimforthehead Apr 13 2010, 10:53am says:

Plays poorly on my rig, around 30-50 fps and very choppy, for a few seconds then it just crashes, every time.
core 2 duo e8400 oc'd 3.9
4 gigs ram
9800 gx2

+1 vote     reply to comment
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Natural Selection 2
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Unknown Worlds
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Released Oct 2012
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