Oh yeah and why are you asking such silly questions?!
Sorry, but I have to say that in this way!?
Hey, ever heard of homebrew Games? I think some of them work.
And homebrew games are always the beginning of an emulator. Look at the NGC emus, most of them play games... but only homebrew games. But some "real" games show some screens or more.
Oh yeah and why are you not making your own PS2 emu, which can play the majority of all games?