I like the idea. You don't have to make the playable character one, but you could make one of the many NPCs one as an option. You could even deactivate the option in settings if you didn't want it. Futa draws a lot of people in who want to see penetration but don't like seeing guys' asses.
Nice game! There are not enough female protagonist games out there! How has the development cycle gone so far? On average, how often do you put out a new version?
