On their own site and on this "download/comment"-side is standing, that is "heavily based". So they took some ideas and inspiration. Even when, on the "visit"-site are screenshots of the game. You could find it really easily out and even when, I think the would wrote in the discreption it a game with Futa's etc. And I think they don't change the game, just because one raging person, who don't needs to play this game.^^
*cough* btw, on this page is an older comment, who asked if there is some gay content *cough*