The head of Mistwalker studios and the man often hailed as the father of Final Fantasy, Hironobu Sakaguchi, has revealed that he has already started work on a fourth RPG title, but has declined to say on which machine it would eventually appear.

Speaking to Famitsu magazine, the moustachioed former Square boss then became tight-lipped about the unnamed project, preferring to talk about his other titles already in development.

For Lost Odyssey, Sakaguchi and his team are hoping to release a single level playable demo of the mysterious RPG in May or June, with the Xbox 360 title still on schedule to appear next year, sometime after the developer's Blue Dragon.

While on the subject of Blue Dragon, which Famistu estimates at being 40% complete, Sakaguchi also revealed that despite being based on the cartoon artwork of Dragon Ball Z creator, Akira Toriyama, he has opted for a more realistic, almost clay-like rendering style for the game.