If the crowdfunding campaign hits 20 million yen, Experience will add 50% more voice acting, an additional voice drama version costume for the protagonist, and more horror scene event CG. 25 million yen means more characters, a theme song, and the addition of a death scene expression change system.
Finally (for now), hitting 30 million yen will add in additional DLC, a live Spirit Hunter series event, and a novelization.
Developer Experience recently launched a Campfire campaign to gather funds for the next entry in the Spirit Hunter series of horror adventure games.