When we saw the Stronghold game reveal, and even more and as we worked through the rules and technical details, I knew that Stronghold mirrored a game I had already encountered. I even suspected that it was something I had read rather than played, and tried to compare it to the game in the Adept series, but that wasn't it. It was only this evening as I read a post in an April Fool's thread that I got it, which is particularly embarrassing as I finally read the last book in the appropriate series DURING BUILD SEASON.