Not sure if this counts, but MVP Baseball 2005 for Xbox Phat. I unlocked all the stadiums, extra players, jerseys, everything. I didn't use any cheats, and got all the "achievements" (even though it was original xbox, there were achievements in that game, like "Beat Barry Bonds in a Home Run Derby" and stuff, I think there were ~50). I also completed an insane amount of seasons. I haven't played it in a while.