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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1 comment by mattn on Nov 10th, 2013

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

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UFO: AI - Crystan OST

UFO: AI - Crystan OST

May 9, 2012 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

May 5, 2012 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

Nov 30, 2010 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

Nov 30, 2010 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

Jun 18, 2010 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

Jun 18, 2010 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  (10 - 20 of 237)
FlashOne
FlashOne Oct 8 2013, 3:05pm says:

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 :-)

+3 votes     reply to comment
EliteHunter39
EliteHunter39 Sep 29 2013, 11:45pm says:

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

+1 vote     reply to comment
H-Hour
H-Hour Sep 30 2013, 11:55am replied:

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

Ufoai.org

+2 votes     reply to comment
EliteHunter39
EliteHunter39 Oct 2 2013, 6:26am replied:

Ok..
Installing.

+1 vote     reply to comment
GreenAssassin
GreenAssassin Sep 14 2013, 2:51am says:

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 :)

+1 vote     reply to comment
H-Hour
H-Hour Sep 14 2013, 3:58am replied:

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

Ufoai.org

+2 votes     reply to comment
KOYK_GR
KOYK_GR Sep 4 2013, 3:27pm says:

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.

+1 vote     reply to comment
H-Hour
H-Hour Sep 4 2013, 6:49pm replied:

It's hard.

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

+1 vote     reply to comment
KOYK_GR
KOYK_GR Sep 8 2013, 3:32pm replied:

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.

+1 vote     reply to comment
gamelover453
gamelover453 Sep 2 2013, 12:16am says:

Reinstalled does not show the earth.

+1 vote     reply to comment
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UFO: Alien Invasion
Platforms
Windows, Mac, Linux, Android
Developer & Publisher
UFO: Alien Invasion Team
Engine
id Tech 2
Contact
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Official Page
Ufoai.org
Release Date
Released Dec 30, 2003
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Community Rating

Average

9.1

487 votes submitted.

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Ratings closed.

Highest Rated (18 agree) 10/10

great fun! worth downloading!

Nov 18 2010, 3:41pm by Dudok22

Style
Genre
Turn Based Strategy
Theme
Sci-Fi
Players
Single & Multiplayer
Project
Indie
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UFO: Alien Invasion
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373 of 20,550
Last Update
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Watchers
1,426 members
Files
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News
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Features
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Reviews
102