I'm happy the idea sounds interesting! And yes, it's a thriller: basically the retelling of the Ripper's crimes from the point of view of Eddy Nichols, the eldest son of the first victim. There will be a demo at the end of August, and then it will probably be put on the backburner until I finish all the loose ends from my previous games.
About the rating... It's not decided yet. I don't mind one way or the other, so that will be decided by the artist ;)