the developement is dead ? the patreon pages does not exist anymore
That's what I was saying in my comment? That essentially he took it down because he was in the hospital and thus wouldn't be able to work on the game.
Just a heads up: The real reason is because the link is different. He's still very much active, and we're on update 0.7 ATM. Feel free to have a look. https://www.patreon.com/Futa_Fantasy/posts