So I found out my used copy of Golden Sun I got for the GBA a year or two back is a fake. I figured something was off when it wouldn't save right and the logo seemed different. Not to mention the manual. I never paid attention or close of mind to it, so went on my way about.
Did some researching today. Learned how to spot a fake for Legend of Zelda: The Minish Cap and came across cheapassgamers. On there they discuss counterfeits and such, and lo' and behold, one of the examples was Golden Sun.
That's how I found out my copy was a fake.
Plus I did some digging around for some screw drivers. I took one and popped the back off. If it was authentic, I wouldn't be able to do this at all. I would need a special screw driver from Nintendo. Seeing as how the screw came right out (and looks nothing like the screw in my authentic Golden Sun: The Lost Age), I knew that for sure, it was a fake.
I'm not really upset. Don't really care that it is seeing as how it doesn't work to begin with. I now know what the difference is from the inside and am aware in the future to keep an eye out for things like that this. Now, when I do go looking for a copy for Golden Sun, I know what the authentic and fake looks like, keep an eye out for the embossed number on the logo, there should be numbers above where the circuit goes into the GBA/GBA SP/DS Lite slot or GBC/GBA converter slot, and anything else that seems off. Learn something new.