Hi ! I made an experimental game engine called LOUPE, to make tangible the practice of game design without programming. It is mainly thought for activity leader on grassroot associations and heavily inspired on the Forum Theatre from Augusto Boal !
(it's in french but when i have the time i will make an english version)
https://www.youtube.com/watch?v=mdwyPFEtXPU
https://zwumyn25.itch.io/loupe-engine