Community Announcements - Goldhawk
We've just released Xenonauts V1.59 for PC and Linux, and will be releasing the Mac version shortly if no bugs appear in the next 24-48 hours.

V1.59 is the revised version of V1.58, which we rolled back a week or so ago because we were concerned about stability issues. V1.58 included several fixes over V1.56, the biggest of which was a fix for an annoying AI hang.

Thanks for your patience!
Community Announcements - Goldhawk
As we've had a few reports of a bug within V1.58 that may be worse than the bugs fixed by the patch (it prevents some people loading ground combat), we've now rolled back the default branch to V1.56 while we look into it.

This should not affect save games etc, but if it does or if you are playing V1.58 with no problems at all and want to continue using it, it is available on our Experimental Steam branch (under the Betas tab of the Steam game options). Just switch over to that and you can keep playing.

For everyone else, we're planning on investigating the reported bug in more detail over the next few days and will put out an updated version once we fully understand the situation.
Community Announcements - Goldhawk
This is another small stability update for the game, fixing three occasional crashes / hangs that users have been experiencing. Two of the fixes here come from our Community Coders, so thanks to them for their efforts.

- Another fix to an AI hang with the Reapers
- Alien base missions should now always load correctly on the Linux version of the game
- Fixed an occasional crash related to the Fury interceptor destroying a UFO with escorts

This will be available on the Windows / Linux branch for a few days, and if there are no new bugs introduced we'll roll it out to Mac and our other distribution services (likely by the end of the working week).
Community Announcements - Goldhawk
We're releasing two "Stable" builds today. V1.56 is an update that will immediately be released on the Steam default stable branch, whilst V1.57 is only available on the Steam Experimental branch. Our plans for releasing this on other platforms are explained after the changelogs:

V1.56 Changelog:
  • Fixed an issue with the mod manager deleting the entire mod directory when you tried to delete a mod
  • Fixed an issue where the mod manager did not correctly save the priority order for deactive mods

V1.57 Changelog:
  • We've created an experimental patch for the shooting code that should verify miss shots are actually able to hit the tile they scatter to. We hope this will correct the issue where shots are sometimes noclipping through walls or otherwise behaving incorrectly.

If the fix in V1.57 does its job, that will be the last update we make to Xenonauts. The problem is that the shooting code was pretty complex even before we spliced some of the Community Coder additions into it when we made V1.5, so we're really not sure if it will fully address the issue (or if it may cause any additional problems).

V1.57 is therefore only available on the Steam Experiment branch - the old Experimental branch stopped working for some reason, so we've deleted it and created a new "Experiment" branch to do the same thing. We'll give this at least a week to see if it causes any major issues and if it fixed the issue as intended.

Regarding the Mac / Linux builds and updates to the non-Steam distributors - this is a lengthy process (it literally takes me most of the day) so I'm going to wait until Monday to see if there are any issues with V1.56 before I roll it out, as if there's a bug in it I'll have wasted all that time and the distributors will be annoyed at me. And if V1.57 proves stable a week after that, I'll do it all again one final time.
Community Announcements - Goldhawk
We've just released another hotfix for Xenonauts V1.5, addressing an AI hang that we considered the largest remaining bug in the game. Here's the changelog:
  • Fixed a second AI hang that was locking the game up during the alien turn
  • Updated the Carrier UFO maps to remove more areas where Harridans could fly inside the UFO walls and then snipe down at you
  • A fix to the mod manager not remembering changes made to mod list priority if you exited the launcher without loading up the game
This is currently only available on Windows and on Steam; we're planning to wait 24-48 hours to check there are no major bugs caused by the hotfix (although there shouldn't be) before we start the laborious porting / upload process to bring the update to Mac / Linux / other distribution sites.

We've also temporarily reverted the Steam Mac version back to V1.09 as it seems people were having some issues with the V1.5 series builds crashing (they're still available on the Experimental branch if you want them). We'll give the Mac versions a more thorough test and re-release them with the next bunch of updates.

There's a couple more issues still on our bugfix radar so we're hoping a V1.56 will be along later this week / early next week to conclude the post-update bugfix support process.
Community Announcements - Goldhawk
I've put out V1.54 on Steam for both Windows and Linux. It's just a small hotfix that fixes a few more of the issues that cropped up with V1.5:
  • Fixed a crash linked to corpse duplication when you stunned a mind controlled Xenonauts
  • Units that are stunned now take 1HP damage, which allows you to use a medikit on them to revive them
  • The Singularity Cannon now has a sell value, so should correctly appear in the base stores
Community Announcements - Goldhawk
We've released another hotfix for Xenonauts V1.5, this time fixing a couple of bugs related to AI loops:
  • A fix to the reaction fire / teleporter hang
  • A fix to an AI turn hang caused by Reapers getting in an animation loop
We're also aware there's some unusual behaviour going on V1.5, firstly something a little fishy going on with "miss" shots occasionally passing through solid walls / otherwise misbehaving and secondly a bug where autoresolving air combat can sometimes lead to your interceptors being turned into UFOs and being rendered unusable.

We're looking into both of those issues as neither is much fun for any players affected. V1.5 was tested for a couple of months before release but it seems we weren't able to catch everything, so we'll do our best to correct the issues as soon as possible (remember you can always revert to V1.09 any time you want using the legacy branch).

Unfortunately for some reason we've lost the use of our Experimental branch (it's not registering new updates any more) and thus we're now pushing updates directly to our Stable branch. These hotfixes shouldn't break anything new, but if they do then we'll roll back to the previous version as soon as we have confirmation of it happening.

Community Announcements - Goldhawk
We have just released Xenonauts V1.51 across all platforms and distribution platforms. Whilst this is just a very small update for V1.5, everything is now available on Mac / Linux too.

  • Fixed a bug with the game crashing if you opened your soldier inventory while standing over the corpse of an alien with a grenade
  • Check the previous announcement for the massive V1.5 changelist!
We have also revised our Steam branches somewhat, adding the Compatibility branch which may be useful for people on low-end machines who suffer performance issues as it does not use tile atlases / archiving. This causes slower load times but uses less video memory.

Also be aware that you can easily revert to V1.09 (the pre-V1.5 version of the game) by changing to the Legacy branch if you want to continue your campaign under the old rules, or are suffering crashes / import issues with an old campaign brought forwards into V1.5.

Instructions on how to access both Steam branches are here:
Community Announcements - Goldhawk
Our last version of Xenonauts V1.5 has been on the Experimental branch for a week and nobody has reported any major bugs in it, so it has now been released to the Windows Stable (i.e. default) Steam branch. We have also activated Steam Workshop for everyone.

We have also started work porting V1.5 to Mac / Linux and expect them to arrive in the next few days. For anyone that likes to play across multiple platforms, we are also preparing the non-Steam versions for Desura, Humble Store and GOG and expect them to arrive in the next week.

For those unfamiliar with V1.5, it is a final free update to the game that irons out a number of issues with the usability, balance and stability of the final release game. It's not a fundamental change to the gameplay, rather it just tries to remove a lot of those annoying little moments when it feels like the game is fighting you.

The community contributed greatly during the development process and many contributed still more after release. I'd like to give specific thanks to Solver and llunak for their work as Community Coders and to Skitso, Max_Caine and Kabill for their mapping / modding. Many others also deserve a mention but I must omit them for the sake of brevity!

  • Steam Workshop & better mod support has been added
  • An epilogue from the Chief Scientist has been added to the victory screen
  • 70 community maps bundled with the game as an optional mod (must be activated in the launcher if you want to use them)
  • Air combat now has time acceleration buttons
  • Line-of-sight system for soldiers significantly improved
  • Cover indicators added to the ground combat
  • Late-game alien psionics / berserking now less unfair
  • Units behind walls / props are easier to see
  • Soldiers now get a nationality flag
  • Money made less tight on easier difficulty settings
  • Fixed a lot of crashes / hangs and made a lot of usability improvements
This is a much reduced changelog due to the character limit on these Announcement posts; if you want to read the full changelog (usually with some brief explanation about each change) then please follow the link here:

This is likely to be the end of the road for additional content and balancing in Xenonauts, although we will continue to fix major bugs in the game. However we are planning to announce a new squad-based tactics game later in the year and if you'd like to hear about it when we do, feel free to sign up to our mailing list here:

Thanks for helping to make Xenonauts the success it has now become, and we hope you enjoy playing with the new features in V1.5!
PC Gamer

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