I believe LMS when he says he's played Mario, Zelda, or Metroid games. It's all he talks about and all he can compare other games to, so I think he has actually played those games.
Anything else, I don't really believe him.
--
"Hold on a minute! That testimony stinks!"
"Witness! You can't just say 'Hello' and expect us to get anywhere! I want you to testify!"