I preordered Y, so right now I'm just playing the waiting game for the release date so I could play it. However, I got a newsletter from EB Games today and found out that if I trade in a game that's worth 15 dollars, I can get X or Y for free. Looking online, I know that I do have a game that meets the criteria(and it just takes up space in my game case), but is it worth getting both versions? Or am I better off just using the trade in credit for another game?