Zexion is an exemplary case of genre maturity. Made by a single person, this Metroidvania draws inspiration from the early 8-bit era in several aspects, such as aesthetics, level of challenge, and the confidence that letting the player find their way is an important part of exploration. Behind all this, however, lies a refined body of knowledge about how an adventure of this type should be put together, how to turn boss fights into spectacular action sequences, and how the modern experience is enriched by giving its audience options for adjustments to suit their different needs.