Ok, hope this doesn't seem silly but it's new at our house. This question regards the memory on the gaming system. We had a gamecube for years and my son always had memory cards for each game. After a few days I realized he was playing away on 3 new games and making progress and I had not bought any memory cards. Will it hold the memory of these games as he progresses or will he need additional memory. He has new Spyro, Sonic and the rings, Crash of the titans and Wii sports. I would hate for him to get to a certain level and then it not save the game.