Super Mario Sunshine is still sold at retail stores, and it has existed, years before Super Mario Galaxy, so consider it impressive that Super Mario Galaxy, is just below the sales of Super Mario Sunshine, even though it has been out for only a matter of months! Super Mario Galaxy will become the best selling game of all time. The only game that it might not beat, is Wii Sports, but that's because it's bundled with the Wii. Then again, Wii Sports is more of a demo, so I'm not sure if it can even count as a game. In that case, then Super Mario Galaxy could become the best selling game of all time. If Super Mario Galaxy replaced Wii Sports, as the bundled game with the Wii, then maybe, it could even defeat that demo!