I use it every once in a while to jot things down before saving the game, so that I would get reminded of them next time I turn it on. Game Notes is a very nifty feature, and can be accessed pretty easily with only a click of a button. It doesn't permit us to transfer these notes to other devices though, which I don't like. If they did, then that would've been pretty awesome. Well, you can send these stuff from one 3DS to another with Swapnotes, but I'd like it to sync these files within all of my devices, if possible—not just 3DS systems. d: