They did, it's called Magical Girl Celesphonia. it's not only the contents that make this game unique, it's the true experience of what an RPG is supposed to be like. Ambrosia has a perfect balance between all components of a legendary game, good performance, good graphics, good story, a log book for all assets, wide range of dynamics and inside game assets, and a lot more. Magical Girl Celesphonia has a lot more content compare to Ambrosia, but is not as entertaining as it (at least not for me). There are just so much excessive contents in Magical Girl Celesphonia, and frankly the flow of the story is not just very attractive any way. You may wanna check out Shimobashira Workshop for more.