I found the most interesting thing to be the fact that the game was called GumShu, and it stars "Nick Stevenson", and there was a NES game (made by Nintendo) called GumShoe that starred a Mr. Stevenson. (
http://www.planetnintendo.com/nindb/nes/gs.shtml)
Pretty obscure reference. I still think it's a fake, I just applaud the guy who made it for thinking that far back.