Now this is a cracking find by forum member XenoVC. He stumbled across these two pictures on DeviantART in the profile of an Obsidian employee:
Now if you look closely at this picture of an Obsidian office you can just see the title screen for the RPG. And looks like Xeno uncovered the original version of it. Plus this artwork which is apparently the plain version of the menu interface. And here is the artist responsible.