Check out the UPC database. They probably have a lot. Also when you let people scan it it if you can't find a matching game then you let them enter it manuall

Check out the UPC database. They probably have a lot. Also when you let people scan it it if you can't find a matching game then you let them enter it manually. Eventually you'll at least have the most common games covered. I went through a similar thought process with a site I made a while ago. grocist.com Btw. Let me know if I can help out at all. I have a bit of free time lately.