Potential spoilers!! (If you haven't played bravely default.)
So I'm still playing through Bravely Default for the first time. I have somewhat spoiled the story for myself as I fell in love with the soundtrack before I played the game, and that lead to research.
Anyway, I have just recently reached the point where Ringabel regains his memory and figures out that Airy is not quite what she claims to be. No surprises for me as I knew the general story already. Still a cool plot development. The really cool thing that I want to point out, is that when I went back into my save file after this revelation, the title screen changed!! The subtitle of the game is "Where the Fairy Flies" but when you go into your file it changes it so that "Where the F F " are in red and then fade away, leaving you with "Airy Lies" as the subtitle.
It isn't something huge and amazing in terms of design, in fact, some people might never notice if they load their file too quick, but it is a really cool touch that fits in with the plot development.
What are some other examples of little touches that game designers have put in that make you appreciate a game even more?