I actually played it repeatedly when I was little. I'd only played original MO on my friend's Xbox because I didn't own one for a long time, so GBA was the only way I could play it. If I remember correctly, I think I managed to save everyone.
If I remember, it wasn't great; it was a bit clunky and drab. I managed to enjoy it somehow, though...
A man walks into a zoo. There's nothing there but one dog. It was a shih-tzu.