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Some sad news to share this Friday evening, as Unknown Worlds Entertainment have announced they're calling it a day for the Linux version of Natural Selection 2. They will, however, continue their Linux server.

Posted in an official announcement on the NS2 website, they claim they're doing this as a result of it apparently being "more difficult to support and develop for the platform natively" including issues like not finding enough users with QA experience to help.

Unlike what happened with Rust, they're not offering refunds to previous buyers. They say to claim a refund from Valve if you purchased it in the last "30" days which isn't even right, it's two weeks and under two hours on Valve's refund option. Update: They adjusted the announcement to mention this is being allowed "from Valve outside the normal Steam refund policy".

Something they noted, is that they've "verified" Natural Selection 2 works in Steam Play saying it "can offer the same or in some cases even better performance on Linux than user experienced before". Sadly ProtonDB has nothing to back that up. They didn't say they would support it, just that it currently works.

The particularly stinging end to the post thanks Linux client users who "helped and gave support from over the years".

Looks like they have already purged Linux from the Steam store page too.

I'm not too happy considering NS2 was a personal purchase. I also upgraded my own copy to their deluxe edition and gifted quite a few copies of it to friends over the years to try to get more people into it.

To be blunt though, this simply sounds like a cost-cutting measure for a game that is way past its prime. For an online shooter, it has an incredibly low player-base and it regularly struggles to even hit 400 players and going by the charts on SteamDB it continues to trend downwards.

This does bring to light an issue here. While yes, we do have Steam Play, again the issue of support that I've raised before comes up. Anyone who purchased it to support them because they had a Linux version are now force to either run it unsupported or not at all. It doesn't sit right with me that games can just be taken away like that.

Article taken from GamingOnLinux.com.
Tags: Proton, FPS, Misc, Steam
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39 comments
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sub Sep 14, 2019
We will most likely see more and more devs dropping Linux support or not considering it right from the start.
You mean exactly like it was before Steam Play then?

I was asking for reliable numbers.
Would allow us to stop speculating about that.

Is there an API to extract from Steam all newly released games within one month and which platforms they support? If we'd do this - back to when Steam for Linux was released - that would surely provide some insight where the fraction of native Linux games is trending.
Including the influence of the rise and fall of Steam Machines.

If you have already posted such numbers, please point me to it. :)


Last edited by sub on 14 September 2019 at 7:05 am UTC
dreamer_ Sep 14, 2019
Okay, so I knew this for a couple of weeks already (was told by a developer who asked me to test the game on Proton) but since it's now official then here's some more info.

If you have direct contact with the developer, can you ask what is their stance on releasing the source code?

I bought NS2 years ago, but the initial Linux version was unplayable on my machine, so I've never gotten into it properly…
rkfg Sep 14, 2019
I have a feeling that as SteamPlay becomes more and more reliable this situation will become common. I wonder what Valve would do if anything at all.

I hardly think that they pulled the native Linux build due to SteamPlay when you need a custom build of Proton to make it work.

Eh, it *will* work through SteamPlay. Good enough for the Linux folks.

Well if "not working properly" is what they deem good enough for Linux folks then I still don't see how they would not have played this card without SteamPlay.
It won't work on current Proton because it ships a slightly outdated Wine version. When they switch to a newer Wine NS2 will work fine (except for the issues I've described). For now there's a big memory leak in one of the Wine-provided functions, quoting the developer:
The wine maintainers fixed the issues related to us (or better Luajit) using the 64 bit zero bit offset with NTAllocMemory with the release of 4.14
You need a custom proton build which is already based on wine 4.14
rkfg Sep 14, 2019
Okay, so I knew this for a couple of weeks already (was told by a developer who asked me to test the game on Proton) but since it's now official then here's some more info.

If you have direct contact with the developer, can you ask what is their stance on releasing the source code?

I bought NS2 years ago, but the initial Linux version was unplayable on my machine, so I've never gotten into it properly…
I asked the developer and here's what he answered (Liam, add this to the article if you want to):

There are some licensing issues that don't make it possible to release the full codebase of spark to the public. During the early times of development UWE licensed modules of spark to 3rd parties for additional funds. Right now from UWE's perspective it's not worth it spending time and money to resolve that.

Also with engines like unity and unreal available it's not really worth it for a studio like UWE to continue to invest in their own engine.

We will look into ns2-specific issues with wine. We already added a workaround for the NtAllocateVirtualMemory related issues with wine below version 4.15

Something else to note is that essentially the decision to drop Linux came down to dropping support for all renderers beside DX11 long term. So we can add additional render features without having to port them for the other renderers. The OpenGL renderer wasn't in a good place to start with and we just lack a full time developer to just focus on that. And we don't have the budget to invest into a Vulkan renderer. But we would be more than happy to welcome a community developer who's willing to work on the native Linux client just for the sake of it. Of course that developer would need to sign our CDT NDA to get access to the engine's source code.

So if anyone's up to making a Vulkan renderer or supporting the existing one, you're welcome! Mind that the engine is still closed source and under an NDA and you most likely won't get paid for that. That said the alternative ways to get money always exist, like Patreon. The NS2 community is small but dedicated, I myself clocked 3760 hours to date and I don't see a reason to stop.
dubigrasu Sep 14, 2019
While unsupported, will the Linux client be still downloadable (and able to start a local server) or simply removed completely?
Liam Dawe Sep 14, 2019
Update: They adjusted the announcement to mention the 30 day refund is being allowed "from Valve outside the normal Steam refund policy".


Last edited by Liam Dawe on 14 September 2019 at 1:06 pm UTC
rkfg Sep 14, 2019
While unsupported, will the Linux client be still downloadable (and able to start a local server) or simply removed completely?
Just in case, you can use the not often used Steam function to backup the game files and restore them afterwards. The build 329 is set to be released on Monday (if nothing bad happens) from what I heard on public Discord channels so not much time left.
morbius Sep 14, 2019
No reason to hold grudge against this developer, NS2 supported Linux when hardly any game did. And by now, NS2 has ran its course, this sort of move is well justified.
dubigrasu Sep 14, 2019
While unsupported, will the Linux client be still downloadable (and able to start a local server) or simply removed completely?
Just in case, you can use the not often used Steam function to backup the game files and restore them afterwards. The build 329 is set to be released on Monday (if nothing bad happens) from what I heard on public Discord channels so not much time left.
Yes, I was wondering if I have to resort to that eventually. Could be also possible to use steam -console to download older builds I suppose.
Truth be told though, I don't see myself playing the game again, I was just curious about what are their intentions regarding the obsolete build. For example Rust devs (initially) removed the Linux support but allowed it to be downloadable, and only later on they actually removed it.
(Is not exactly the same case yes, in Rust case they kept releasing newer, albeit unsupported builds.)
Thanks.
F.Ultra Sep 14, 2019
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I have a feeling that as SteamPlay becomes more and more reliable this situation will become common. I wonder what Valve would do if anything at all.

I hardly think that they pulled the native Linux build due to SteamPlay when you need a custom build of Proton to make it work.

Eh, it *will* work through SteamPlay. Good enough for the Linux folks.

Well if "not working properly" is what they deem good enough for Linux folks then I still don't see how they would not have played this card without SteamPlay.
It won't work on current Proton because it ships a slightly outdated Wine version. When they switch to a newer Wine NS2 will work fine (except for the issues I've described). For now there's a big memory leak in one of the Wine-provided functions, quoting the developer:
The wine maintainers fixed the issues related to us (or better Luajit) using the 64 bit zero bit offset with NTAllocMemory with the release of 4.14
You need a custom proton build which is already based on wine 4.14

Which was exactly my point ;-)
rkfg Sep 14, 2019
I have a feeling that as SteamPlay becomes more and more reliable this situation will become common. I wonder what Valve would do if anything at all.

I hardly think that they pulled the native Linux build due to SteamPlay when you need a custom build of Proton to make it work.

Eh, it *will* work through SteamPlay. Good enough for the Linux folks.

Well if "not working properly" is what they deem good enough for Linux folks then I still don't see how they would not have played this card without SteamPlay.
It won't work on current Proton because it ships a slightly outdated Wine version. When they switch to a newer Wine NS2 will work fine (except for the issues I've described). For now there's a big memory leak in one of the Wine-provided functions, quoting the developer:
The wine maintainers fixed the issues related to us (or better Luajit) using the 64 bit zero bit offset with NTAllocMemory with the release of 4.14
You need a custom proton build which is already based on wine 4.14

Which was exactly my point ;-)
In my recent post they say it's been patched on the game side to support older Wine versions (but I just checked and it indeed doesn't start on 4.11). Anyway, the "custom" thing doesn't mean you need to patch Proton or Wine for this game, just wait for an update. I know it's not much different for an average Joe but for me it's a big difference.


Last edited by rkfg on 14 September 2019 at 2:20 pm UTC
Whitewolfe80 Sep 14, 2019
I have a feeling that as SteamPlay becomes more and more reliable this situation will become common. I wonder what Valve would do if anything at all.
If it does and Valve do nothing it's going to seriously erode some trust.

The flip side to that is it makes better business sense not to do anything as the majority of people talk a good game about supporting linux gaming yet at the same time they are playing Doom 2016 fallout 4 etc which have no linux friendly policies.I hope for more native games but am thinking this is going to be become more and more common.
Liam Dawe Sep 14, 2019
I have a feeling that as SteamPlay becomes more and more reliable this situation will become common. I wonder what Valve would do if anything at all.
If it does and Valve do nothing it's going to seriously erode some trust.

The flip side to that is it makes better business sense not to do anything as the majority of people talk a good game about supporting linux gaming yet at the same time they are playing Doom 2016 fallout 4 etc which have no linux friendly policies.I hope for more native games but am thinking this is going to be become more and more common.
So to you, buying a game with Steam Play in mind is not supporting Linux gaming? Even though it shows as a Linux sale? Curious.

Also, you're mixing two completely different situations together.

NS2 players picked it up as it was supported.

F4 and Doom buyers do so *knowing* they are not supported.
Whitewolfe80 Sep 14, 2019
I have a feeling that as SteamPlay becomes more and more reliable this situation will become common. I wonder what Valve would do if anything at all.
If it does and Valve do nothing it's going to seriously erode some trust.

The flip side to that is it makes better business sense not to do anything as the majority of people talk a good game about supporting linux gaming yet at the same time they are playing Doom 2016 fallout 4 etc which have no linux friendly policies.I hope for more native games but am thinking this is going to be become more and more common.
So to you, buying a game with Steam Play in mind is not supporting Linux gaming? Even though it shows as a Linux sale? Curious.

Also, you're mixing two completely different situations together.

NS2 players picked it up as it was supported.

F4 and Doom buyers do so *knowing* they are not supported.

No its not because showing as a linux title means if you excuse me f**k all to game studios that are completely unwilling to even entertain a linux port Bethesda EA Activision Ubisoft etc etc. Yes just like they picked up rust knowing it was supported then the devloper changed their minds and poof gone steamplay only and it will keep happening unless the market share grows to a sufficent point. I think we are going to have to agree to disagree on this as you are clearly far far more positive than i am I feel we are always dealing from a postion of weakness when it comes to getting native games to linux. (I mean triple a games we will always get the niche games)
Liam Dawe Sep 15, 2019
Sure will agree to disagree as I'm really not into the defeatist attitude.
Whitewolfe80 Sep 15, 2019
Sure will agree to disagree as I'm really not into the defeatist attitude.

I would call it realist but i get you
Corben Sep 16, 2019
I thought Unknown Worlds did give the development of NS2 to the community? Haven't played NS2 in a while, but I loved it. And the Linux Version did run great for me.
Well, I guess I'm okay with it, as long as it's still running somehow. Though it's pretty sad. I remember vividly this development post and was excited about it. That post was also a reason that brought me to Sublime Text...
Well, times change...
cprn Sep 17, 2019
Uh, I actually played for a few hours last month and liked it... :( Shame.
N30N Sep 26, 2019


I guess Steam doesn't support a clean transition for dropped platforms. I was left with a non functioning linux binary installed.
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