Cheat codes are not copyrighted and can't be copyrighted. At least that was nintendo.com's response email to me. Is it true? Does anyone have any inside info on this topic?
I think cheat codes falls under factual information. The cheat codes are embedded into the software so it's a fact that a certain code will do a certain thing. Factual information can't be copyrighted (although this is a very broad statement).