NovaBound is going to use the Undertale Battle System because it makes everything more fun. Choices that can affect the ending, going through a TouHou-styled attack to be able to dodge. Only problem with that is you only have a vague idea of what the attack actually looks like. Mario and Luigi uses the idea in a more visually appealing way, while Undertale's has a lot more going on in exchange for a lack of how the attack ACTUALLY looks...