I grabbed and tested the "v1.0 Complete Edition" which supposedly finished the game in full and included both the game and the special episode. It's a waste of 1gb. It will loop a disjointed beginning sequence over and over and every time it ends, it has this error
Code:
While running game code:
Exception: Expected transition to be a displayable, not a <curry <function Fade at 0x0359CA30> () {'new_widget': <Fixed at 5f96110>, 'old_widget': <Fixed at 5f96190>}>
If you rollback, it will hit that error again. If you ignore it, it will loop over and over. It's broken beyond repair. It's pointing to errors in the renpy folder of all places. The makeup of the game folder is very strange. It's mixed rpa, rpy, rpyc and py files with no real immediate purpose behind the structure.
In short, don't touch it. Not until an expert or someone with a great degree of understanding of python can use the SDK to attempt a repair. Or the dev figures out how to fix it. It's been out less than a day.