As long as I’m talking about the GUI, the full game will have some features that I left out of the demo. One will list all the different endings that you’ve reached, including Dead Ends. There may even be some special bonuses if you find enough of them… And, of course, there will be the classic CG gallery where you can go to look at all the CGs you’ve come across during the main story. You can also see how many you haven’t found yet.
There are some other extra features I’ve been thinking about adding but haven’t reached a final decision yet. They include a music player, sound player, character gallery, and character profiles. None of those would be especially difficult to implement, so it really just depends on player interest. Maybe I’ll get some other ideas as well, though we’ll just have to wait and see.