Xenonauts is a strategy game in which you control a multi-national military organisation defending a Cold War-era Earth from alien invasion, using small squads of persistent soldiers to eliminate the extraterrestrials and recover their technology in turn-based ground combat. A detailed strategic layer allows you to co-ordinate the defence of the planet, using your interceptors to shoot down UFOs and researching captured artefacts to learn about your foes and unlock new combat equipment to use on your missions.

Xenonauts is a spiritual successor to the classic X-Com strategy games from the 1990s. We aim to improve the graphics, add new content and streamline the interface whilst still retaining all of the key mechanics of the original games. Devoted fans should love this game, but we're also keen to introduce the joys of old-school grand strategy to a whole new generation of players who might not otherwise experience it!

Patch 1.65 (16 September 2016)

• This update is for Windows only.
• Miss shots should no longer go through walls; the trajectory code has been updated so they should only hit tiles that a "hit" shot would be able to hit.
• Grenade scatter calculation updated, so "miss" throws can actually miss by a meaningful amount. This applies to both Xenonauts and aliens throwing grenades.
• Stunned zombies (which appear dead) will no longer spawn zombies. This will eliminate the bug where Reapers apparently spawn from thin air, and occasionally were also invulnerable for reasons that remain unclear
• Damage from base defence turrets now correctly reduces the number of attacking aliens it fails to destroy an attacking UFO.
• Soldiers now gain Bravery from taking suppression damage, as it was virtually impossible to train up before.
• Soldier Strength now updates correctly, as there was a bug in the formula before.
• Manufacturing screen now displays the number of required items in your stores when previewing a project, rather than just the number of required items.
• Saviour Medal and Crux Solaris medals can now be awarded and displayed correctly.
• Alien bases are now correctly destroyed if you blow the Cores and then suffer a squadwipe.
• Fixed an issue in the air combat where the aircraft throttles would sometimes not work properly.
• Geoscape performance has been optimised on some systems.
• Game startup speed has been improved.
• Fixed crash when a building collapses with a drone inside.
• Minor revisions to game manual.

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Patch 1.63 (02 November 2015)

• The Mac and Linux ports have been updated to version 1.63

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Patch 1.61 (15 October 2015)

• The Mac and Linux versions of Xenonauts have been added.