it seems that idTech2/3 are too stubborn to die. at least, since they have become open source, several attempts have been made to update the engines to make them catch up with today's standards. reminds me a lil of the 3dgs plugin rallye for certain shaders etc.
this seems to be a real promising one:
http://xreal.sourceforge.net/xrealwikiscreenshots:
http://xreal.sourceforge.net/xrealwiki/ScreenShots
