Gaming 3DS roms question (not asking where to find them!)

[placebooooo]

I was browsing online and ive found a few 3ds roms but they all mostly seem to be euro roms. I also found very little usa roms and i want to ask if there really is a difference between them now that gateway owners arent region locked. Also, I did notice that the euro and usa and jap roms had different sizes?

 

[loco365]

The most that is really different could probably be just language changes and minor graphic changes, like real-life advertising or terms that may change from country to country.

As for size differences, they could be because of graphic sizes (ie: different logos for different regions etc), or different sizes in text files (Like Pokemon games and whatnot.)