The engine is fairly dedicated to Wonder Boy III and running the retro engine with its own set of constraints, so we don't expect mods to be very easy/practical... but it's all there if someone wants to try (that's how we got the fabulous Turma da Monica mod a few months ago)
— Lizardcube (@lizardcube) 27 novembre 2017
En gros, il faut trouver la ligne "Editor=false" et changer en "true" et appuyer sur F en jeu pour accéder aux outils.
https://twitter.com/lizardcube?ref_src=twsrc^tfw