I do not use my real name for my mayor or alts. Even if my name is gender-neutral, I don't like using my name on female characters. I also try to hide my identity, so I don't name the male characters my name either.
Used my real name for all of the earlier titles, but when New Leaf came out I was just finishing reading the Witcher books (at least the two that had been released in English) and figured I'd name myself after that. Kind of regret it. Doesn't really fit in Animal Crossing. Oh well.
Kind of a mix of both.... Luann has always been my game nickname, but only because it's a fusion between my 2 real names that actually sounds like an actual one. So it's similar to what I'm actually called.
I tend to avoid using 100% invented names because I've learned from experience that even though I like them for that moment, I'll get tired of 'em quickly.
I use my real name for all my games. (with the exception or Pokemon Mystery Dungeon, because I can't think of anything good for my partner Pokemon :/)
I guess the reason behind this is that it feels a bit less personal to me if I don't use my real name, and that I can't think of anything good or creative.
Real name. It just feels like they are not talking to me if I use a different name. It is just weird, I have a 2nd copy where I use a ''fake'' name and that feels so strange. :/
My realname is Hannah, I tried my middle name for a change (Elise) but I'm not a huge fan of it.