Demo Explanation:
In demo there Normal and Demo mode, only save files from Normal mode can carry over to full game.

Demo mode:
You can chose to start with 99 level or with lot's of money,
or both of them.

Normal mode:
you start at level 1 with nothing but your save data can be used
for full game.

In previous demo there a bug where this option didn't appear and auto lead to begin with 99 with all, but it has been fixed.

Over-used save file:
Saved data from Demo (You start with 99 level/lot's of Money) can't be used for full game else you will have an error message.

 

I try to use Demo Mode save file in full game that I still working on and...

That happens...

 

If you got any question feel free to ask.