Happy Birthday id Software / id Open GPL Games now on github.com - id Software celebrates his 21st birthday! And have provided all her Open GPL Game datas (with downloads) on github.com.
GPL-Games: RtCW SP and MP, ET, DOOM 1-3, Quake 1-3 and more.

Links:
id@twitter: https://twitter.com/#!/idSoftware
id@github: https://github.com/id-Software

All files ripped and zipped are available here

Source: Splatterladder | rtcw4ever