Estranho pois no meu z6 tbem não estou encontrando...pode ser a versão, tenta baixar outra versão, dá uma pesquisada no google para ver se vc acha !

Já os formatos que vc pode encontrar dos rooms são .v64 .z64 ou .rom aqui vc pede encontrar algumas:

ROMS
http://**********.com/files/5296163/Roms_n64_parte1.rar
http://**********.com/files/5303208/Roms_n64_parte2.rar
http://**********.com/files/5310228/Roms_n64_parte3.rar
http://**********.com/files/5317943/Roms_n64_parte4.rar
http://**********.com/files/5342514/Roms_n64_parte5.rar
http://**********.com/files/5357232/Roms_n64_parte6.rar
http://**********.com/files/5370919/Roms_n64_parte7.rar
http://**********.com/files/5386963/Roms_n64_parte8.rar
http://**********.com/files/5393255/Roms_n64_parte9.rar
http://**********.com/files/5398098/...64_parte10.rar
http://**********.com/files/5401831/...64_parte11.rar
http://**********.com/files/5405672/...64_parte12.rar
http://**********.com/files/5409843/...64_parte13.rar
http://**********.com/files/5414910/...64_parte14.rar
http://**********.com/files/5420659/...64_parte15.rar
http://**********.com/files/5426038/...64_parte16.rar
http://**********.com/files/5432250/...64_parte17.rar
http://**********.com/files/5439599/...64_parte18.rar
http://**********.com/files/5446976/...64_parte19.rar
http://**********.com/files/5454583/...64_parte20.rar
http://**********.com/files/5467379/...64_parte21.rar
http://**********.com/files/5484900/...64_parte22.rar
http://**********.com/files/5496000/...64_parte23.rar
http://**********.com/files/5507022/...64_parte24.rar
http://**********.com/files/5517156/...64_parte25.rar
http://**********.com/files/5526240/...64_parte26.rar
http://**********.com/files/5533031/...64_parte27.rar
http://**********.com/files/5537818/...64_parte28.rar
http://**********.com/files/5541367/...64_parte29.rar
http://**********.com/files/5545226/...64_parte30.rar
http://**********.com/files/5548546/...64_parte31.rar
http://**********.com/files/5552395/...64_parte32.rar
http://**********.com/files/5557003/...64_parte33.rar
Senha dos arquivos.: acidwarez