Formerly the "QUAKE 2 Engine", with pioneering innovation in 3D environments, a few of id Tech 2's most notable features were out-of-the-box support for OpenGL hardware-accelerated graphics (in addition to the traditional software renderer), and colored lighting effects. Games created on this engine technology include QUAKE II, Hexen II, Heretic II, Sin, Soldier Of Fortune, Half-Life, Kingpin and Anachronox.
Linux Game News chose UFO: Alien Invasion as the best open-source game
Linux Game News chose UFO: Alien Invasion as the best open-source game in their turn-based strategy category.
Sep 24, 2012 UFO: Alien Invasion News
DDay Normandy Released on Desura
Axis vs Allied, an online multiplayer and offline singleplayer botmatch FPS.
Aug 12, 2012 DDay Normandy News
New Aliens
The UFO:AI development team is proud to announce that new aliens arrived on the battlefield!
Jun 26, 2012 UFO: Alien Invasion News
Improved Air Combat
The UFO:AI development team is proud to announce that we made the first steps towards a new improved air combat system.
Jun 13, 2012 UFO: Alien Invasion News
New soldier models & UI Update
The UFO:AI development team is proud to announce that we have finally merged the new soldier models into 2.5-dev version.
May 30, 2012 UFO: Alien Invasion NewsOnly registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.










How the **** do I download this?!
what engine that valve made half life beta?
modified quake 1 engine
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This engine is supposed to be open source but I have searched everywhere and haven't found a download. If you're going to put something up saying it's open sourced post a download or link will ya?
ftp.idsoftware.com/idstuff/source/
id Tech 2 is the engine of Quake 2.
(prefix it with ftp : // i can't post URL ATM)
For everyone who thinks Half-Life is based off id tech2:
Thats not really true, vale had license for Quake One and Quake Two Engine, but half-Life just uses the RAD lightning from Quake 2, and this Map feature which lets you go back again to the last map. The rest is from Quake and highly modified.
Apparently the story goes that they initially were hoping to use the Quake 2 engine however eventually decided to license the QuakeWorld engine. They brought over many fixes and changes from the Quake 2 engine however.
I wanna make a indie game with this, how do i get it?
How do I download