si les pide serial, prueben con estos:
GPHM-KD9T-PGNX-MJPW-C9F7
FNTD-HMNF-77NK-7G9T-CDKX
7TCK-DFC7-PWWP-DCWG-DMKM


Requerimientos mínimos

Pentium IV a 2 GHz o equivalente 512 megas de memoria RAM
Tarjeta vídeo de 64 MB, compatible con Directx 9.0c
Espacio en el disco duro de 2800 megas Unidad de DVD-ROM 4x
Tarjeta de sonido de 16 bits compatible con Directx 9.0c

Descarga

http://rapidshare.com/files/4842858/Quake4.part01.rar
http://rapidshare.com/files/4846897/Quake4.part02.rar
http://rapidshare.com/files/4850207/Quake4.part03.rar
http://rapidshare.com/files/4853598/Quake4.part04.rar
http://rapidshare.com/files/4858422/Quake4.part05.rar
http://rapidshare.com/files/4870059/Quake4.part06.rar
http://rapidshare.com/files/4876484/Quake4.part07.rar
http://rapidshare.com/files/4901871/Quake4.part08.rar
http://rapidshare.com/files/4884069/Quake4.part09.rar
http://rapidshare.com/files/4892419/Quake4.part10.rar
http://rapidshare.com/files/4910183/Quake4.part11.rar
http://rapidshare.com/files/4918540/Quake4.part12.rar
http://rapidshare.com/files/4927897/Quake4.part13.rar
http://rapidshare.com/files/4937331/Quake4.part14.rar
http://rapidshare.com/files/4946837/Quake4.part15.rar
http://rapidshare.com/files/4956367/Quake4.part16.rar
http://rapidshare.com/files/4965198/Quake4.part17.rar
http://rapidshare.com/files/4971715/Quake4.part18.rar
http://rapidshare.com/files/4977529/Quake4.part19.rar
http://rapidshare.com/files/4982426/Quake4.part20.rar
http://rapidshare.com/files/4986340/Quake4.part21.rar
http://rapidshare.com/files/5016349/Quake4.part22.rar
http://rapidshare.com/files/5022975/Quake4.part23.rar
http://rapidshare.com/files/5030123/Quake4.part24.rar
http://rapidshare.com/files/5066802/Quake4.part25.rar
http://rapidshare.com/files/5076339/Quake4.part26.rar
http://rapidshare.com/files/5256728/Quake4.part27.rar
http://rapidshare.com/files/5420569/Quake4.part28.rar
http://rapidshare.com/files/5425492/Quake4.part29.rar
http://rapidshare.com/files/5438630/Quake4.sfv