It was Pokemon Emerald for Gameboy Advance. Very well done box and cart though for a pirate, no obvious spelling mistakes etc. About the only thing that gave it away as a pirate cart was the 6 page (looking very official and "complete" though) instruction manual. It was advertised as brand new in box, when I got it though, there was no "shrinkwrap" nor seal still, obviously not as advertised!
btw, does anyone own the official copy and know how many pages the real manual is, haha! I know it has to be at least 23, as at the bottom of page 4 of mine is says "see page 23 for more information on saving your game". A long time ago, my sister bought a copy of Bubble Bobble for Gameboy, also a pirate. Instead of saying "Nintendo" on it, it actually said NINFENDO. Needless to say, I've never let her live this one down.
Anyway, I told the seller I wanted a refund and they gave me one thankfully. And they said keep the cart, didn't want it back. So now I have a free pirate cart for my troubles. I'm still thinking about reporting the seller though...what do you guys think, should I?