But if only there was a supplement book that had guidelines for combining & straddling the lines of these books?! Well there is! The Castle Keepers Guide (CKG) by Davis Chenault, & Stephen Chenault does an excellent job of clarifying the C&C system while giving enough room for the dungeon master to customize their own campaigns. The mechanics of the Castles Keeper's Guide are so easy to convert that it hardly matters what game you are playing it will work with this system. C&C is stripped down 3.5 AD&D done right.
That brings me back to the under unifying ideas of my campaign worlds. Way back in January of 2017 I began wanting to run a Clark Ashton Smith Solar System. Well I ran quite a few mini campaigns of that setting but it mutated through a few different retroclone systems. Lately I find myself wanting to return to that campaign once again. The difference here is that I've got more resources to really pull this off. One of which is a copy of Skirmisher Publishing's Edgar Rice Burroughs’ Mars: Shadows of a Dying World (An OGL Guide to Monsters, Races, and Beasts). I really want to get back to my own version of Mars & expand back into a pulpy & comic style Mars.