-- Your major concept/project -

I've always been impressed by the ideas you guys come up with concerning the worlds/dimensions/etc. of your characters.
So I was just wondering...with all your plans that are crucial to your series, what's the most significant project you've been working on? This could be the most elaborate idea, the largest, the most research, the one you've been working on for the longest, etc. Basically, your big idea.

---

For example, my most recent big idea is the Atorviru Timeline. The essence of this project should be clear. If you don't already know, Atorviru is the setting for most of my stories, and the home of the majority of my characters.