Amazingly, I have made great design development with my "Monster Keep" idea and/or design. I have put together an interesting set of mechanics for the game that are inspired from the original game idea (all the way back to version 1.0).
Now we are on Version 10.0 of the game. That means that I've gone through ten (10) design cycles, trying to improve the game. I finally feel like I am "somewhere" with the design idea.
This "core" product follows the XTG3 licensing and allows for Single Pack Expansions to the "core" set of cards.