These games seem to serve to get you to spend money to hasten the process of getting to the smut and many are curious as to why you should do this when you could just as easily hop onto a hentai site and enjoy yourself that way.
Yes, Nutaku have taken a lot of flak over the years for bringing nothing but freemium titles to the market. Since it first came out in 2017, Crystal Maidens has been one of the best examples of Nutaku ingenuity and devotion to interactive smut.