Issue with a game

[[vL]Kp]

You are lucky the infection was so obvious. An advanced attacker could have modified the game executable to contain an embedded payload that is decrypted and executed during gameplay. I find the idea of relying on a downloaded ISO a bit dubious, but if you persist in that route, I suggest finding someone you trust and getting them to give you the digest (md5, sha1, etc.) of their game disc so you can verify that the ISO you pick has not been modified.