Q3's engine was just fantastic. I remember running it flawlessly even on the humblest of configs. As a matter of fact, I've just bought American McGee's Alice at Sold Out and I still find it visually stunning!

Indeed, only iD have the balls to show off their source code! It's perhaps never that 'pretty' but it sure delivers the goods. There's still a lot of life left in the Q3 engine given that a lot of modern features will be added by the bright sparks out there 😀

Source code to other famous titles has been released as well (Descent and Marathon come to mind), but I have to respect iD's consistency in releasing the source for their various titles over the years.

I wonder if it's not a coincidence that Raven has finally transitioned from making Quake 3 engine games to making Doom 3 engine games (e.g. Quake 4). Hopefully people will eventually be able to make advanced Quake 3 source ports that run old Raven games (e.g. Voyager: Elite Force, Jedi Outcast) the way Doom source ports can run Heretic, Hexen and even Strife (supported by ZDoom and Vavoom ports).

It's heeerrree: http://www.shacknews.com/onearticle.x/38305