GameCube is one of my favorite consoles!!!!! Luigi's Mansion was so good, I bought it for 3DS as well. Mariokart wasn't too bad either. If you are wanting to get some more games, I recommend going to jjgames (just type that into your search bar). GameCube games are getting more expensive as well. Some titles I recommend are Pokémon XD: Gale of Darkness and Super Smash Bros. Melee. If you like pokemon, XD is a really nice twist. It is the sequel to Pokémon Coliseum, which I would also recommend. XD added Shadow Pokémon and the snag machine. Your goal is to stop Cipher Labs from creating shadow pokemon. The game doesn't really have wild pokemon, so you catch them by snagging them from rivals. In Super Smash Bros., there are characters from many Nintendo titles including Mario, Zelda, and Metroid among many others. In this game you fight the CPUs or other players till the death. Overall, these are two games that I think you can't go wrong with. Hope I helped!