I started playing pokemon Leaf Green and for some reason, whenever I save the game, when I reopen my Game Boy - the game starts all over again. Can anyone help me with that?
The game boy games (even the advance) have an internal battery that allows the game to stay saved even when it's off. But after a long time, the battery can die out, and when it does, you won't be able to save; this has likely happened to your game, so it can no longer save. Sorry about that. :(