According to the nintendo website it reads:
"A very small number of older games may not function properly on the Game Boy Color, Game Boy Advance, or Game Boy Advance SP. Common symptoms include scrambled images, missing graphics, or sound problems. "
http://www.nintendo.com/consumer/sys...ilitychart.jsp
However it doesn't list any indicator of what games would have issues. I was wondering if anybody here knew of any specific games with issues or of a list of all games with problems. Thanks in advance.