Fantasy RPGs borrow heavily from myth. The superstructure of character advancement in D&D has always intended to emulate character growth from humble beginnings to nearly godlike heroism. Where D&D takes this broad structure and uses it for its own unique version of fantasy, Agon goes back to the source. Agon is an RPG of mythic heroes, seeking to emulate epic poems of Ancient Greek heroes and their exploits. Where a game like D&D guides the action and the narrative in broad strokes, Agon uses a more structured set of procedures to play through the trials faced by the characters. Designers John Harper and Sean Nittner seek to provide a specific structure by which players address challenges, see the consequences, and grow in relation to their world. The result is something evocative and easy to play, but which may frustrate players used to the more open-ended approach of D&D and other older, more traditional RPGs.