In the original Fap titans you can buy hentai art with it. You have 3 choices. One is where you randomly get a hentai image second is 25% chance for favourite hentai image and third a 100% favourite hentai image. You van select up to 2 favourite attributes which need to be in the image ranging from artist till series. Forsome reason they removed it in this version while it was probably 90% the reason you played that game.