Personally, I think its a nice idea that could be used in virtually any RPG system!
Conceptually, its almost like the Eyewitness series of books.
Eyewitness Books
On a given 2 sided page, side 1 could be the stat block and image, while side 2 could be the fluff, ecology, tactics and anything else that doesn't fit around the margins of the illustration.
If I were you, I'd contact some of the publishers around here with the idea...or if you have the time, do a pdf of your own critters.
This is
really good thinking! This
is marketable.
Linear Mode
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