I'm ashamed to be registered on GameFAQs after reading this topic. Some of you just have no clue how to read.
TC is not talking about games with a properly used Z in the title, he is talking about games where a word is in plural form and the S was changed to Z to look "cool". F-Zero was not changed from S to Z. F-Sero doesn't make any sense and anyone who brought it up should receive 10 public lashings. Dragon Ball Z was never Dragon Ball S, Mega Man ZX was never Mega Man SX, etc.