UFO Screenshots
It is the year 2084. You control a secret organisation charged with
defending Earth from a brutal alien enemy. Build up your bases, prepare
your team, and dive head-first into the fast and flowing turn-based
combat.

UFO: ALIEN INVASION is a squad-based tactical
strategy game in the tradition of the old X-COM PC games, but with a
twist. Our game combines military realism with hard science-fiction and
the weirdness of an alien invasion. The carefully constructed
turn-based system gives you pin-point control of your squad while
maintaining a sense of pace and danger.

Over the long term you will need to conduct
research into the alien threat to figure out their mysterious goals and
use their powerful weapons for your own ends. You will produce unique
items and use them in combat against your enemies. If you like, you can
even use them against your friends with our multiplayer functionality.

'UFO: Alien Invasion'. Endless hours of gameplay -- absolutely free.

The game takes a lot of inspiration from the X-COM series by Mythos and
Microprose. However, it's neither a sequel nor a remake of any X-COM or
other commercial title. What we as a team wanted to make is a brand new
experience that tries to surpass the quality of games from 1992, rather
than simply recreate them with flashier graphics.

We also believe that open-source projects don't
need to be disorganised or badly-managed. We work together in a
friendly and professional way, with a clear vision for a game that we
know is worth playing.

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CaveExpress

News 1 comment

A new game I'm working on is now available for Android. If you like the game, please rate it.


CaveExpress is a classic 2D platformer with physics-based gameplay and dozens of levels. Master your pedal-powered flying machine to pick up packages from your cave-dwelling clients and drop them off
at the collection point. But beware! Mighty mastodons, terrifying pterodactyls and others would rather see you extinct.

I'm also working on a Windows version released on Desura. It will be available soon.

Caveproductions.org
Play.google.com

Important update to saved games

Important update to saved games

News 0 comments

We've made an important change to the directory where save games are stored. If you play our latest development version (2.5-dev), read more to find out...

Monthly development report, August 2013

Monthly development report, August 2013

News 1 comment

This month saw a burst of activity, with bug fixes across all major systems, dramatic balancing changes to soldier advancement, improvements to the alien...

Working towards an official Debian release

Working towards an official Debian release

News 1 comment

Are you a Debian/Ubuntu/Mint gamer? Help apo, a member of the Debian Games Team, by testing the latest packages.

Monthly update for July, 2013

Monthly update for July, 2013

News 2 comments

Woops. I forgot to post the June update. Here's the development update for July!

UFO: AI - Crystan OST

UFO: AI - Crystan OST

Music 3 comments

These are the tracks i composed for UFO: Alien Invasion. Some of them havn't made it into the release for various reasons - they're tagged as unused.

UFO: Alien Invasion 2.4

UFO: Alien Invasion 2.4

Full Version 0 comments

A dozen new maps to battle aliens Rescue soldiers in dropships shot down by aliens and retreat from battles New particle and sound effects for weapons...

UFO: Alien Invasion 2.3.1 MacOSX

UFO: Alien Invasion 2.3.1 MacOSX

Full Version 0 comments

UFO: Alien Invasion has released 2.3.1. This release is a bug fix for the stable 2.3 release and maintains compatibility for all saved games under 2.3...

UFO: Alien Invasion 2.3.1 Windows

UFO: Alien Invasion 2.3.1 Windows

Full Version 3 comments

UFO: Alien Invasion has released 2.3.1. This release is a bug fix for the stable 2.3 release and maintains compatibility for all saved games under 2.3...

UFO: Alien Invasion 2.3 Linux

UFO: Alien Invasion 2.3 Linux

Full Version 2 comments

The UFO:AI development team is proud to announce the release of UFO: Alien Invasion Version 2.3. Two years in the making, this version features loads...

UFO: Alien Invasion 2.3 MacOSX

UFO: Alien Invasion 2.3 MacOSX

Full Version 0 comments

The UFO:AI development team is proud to announce the release of UFO: Alien Invasion Version 2.3. Two years in the making, this version features loads...

Post comment Comments  (20 - 30 of 249)
Mossman180
Mossman180

Any idea for when the base attacks will be updated so you can lift aircraft and/or cut the power?
I'm just curious. :)

Reply Good karma Bad karma+1 vote
H-Hour Creator
H-Hour

It's planned for "the future", but it won't make it into 2.5. So... not soon.

Reply Good karma+1 vote
FlashOne
FlashOne

I've been playing this game for some time now and I have to say, it's one of the best "x-com like games" around right now. The Battlescape isn't as polished as the AAA X-Com remake, but at least the Geosphere part isn't as dumbed down.

A big thank you to the developers who created this game for the community and released it for free. Your work is highly appreciated :-)

Reply Good karma Bad karma+3 votes
EliteHunter39
EliteHunter39

Isn't this based on the original X-Com: UFO Defense?

Reply Good karma Bad karma+1 vote
H-Hour Creator
H-Hour

"UFO: Alien Invasion is a squad-based tactical strategy game in the tradition of the old X-COM PC games"

Ufoai.org

Reply Good karma+2 votes
EliteHunter39
EliteHunter39

Ok..
Installing.

Reply Good karma Bad karma+1 vote
GreenAssassin
GreenAssassin

There is a bug for the game went some times sending a aircraft to attack a ufo the game crashes it happened on my old windows 7 and now on my windows 8 it would be nice if the bug was fixed :)

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H-Hour Creator
H-Hour

If you have a save game right before the crash occurs, please post it on our bug tracker:

Ufoai.org

Reply Good karma+2 votes
KOYK_GR
KOYK_GR

em can you tell me why you dont add coop in this game? and i mean Battlescape and geosphere? plz reply i whant to know.

Reply Good karma Bad karma+1 vote
H-Hour Creator
H-Hour

It's hard.

(You can already play MP coop in the battlescape.)

Reply Good karma+1 vote
KOYK_GR
KOYK_GR

that's no coop. that's half-coop lol.

are you trying atlest to find new ways on how can make it?

thanks for the reply btw.

Reply Good karma Bad karma+1 vote
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UFO: Alien Invasion
Platforms
Windows, Mac, Linux, Android
Developer & Publisher
UFO: Alien Invasion Team
Engine
id Tech 2
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Ufoai.org
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9.1

494 votes submitted.

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Highest Rated (18 agree) 10/10

great fun! worth downloading!

Nov 18 2010 by Dudok22

Style
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Sci-Fi
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