Hi there to anyone who's still interested! This project has been dead for the best part of a year now, and due to problems with my newer project (which I hope to resolve at some point in the future), Grim is back in development!
It's been restarted using Unity as the engine this time, with all-new updated graphics (still cartoony, but a little more modern), and the target platforms extended to Mac OSX and Linux too. Things are going better this time, as I don't have to create literally everything from scratch in Unity like I did with DBPro. Hopefully there'll be a few more updates in the coming weeks as we work towards a demo at some point in the new year.
(The floating Grim isn't final :P)