Press z, a, space, the up key, or click the screen to progress the text. Other then that it's mostly just a movie thing.
You are more then welcome to remix this as long as you give credit, and please change the art. :) If you like, I can make you some custom art, here is the link if you'd like to place an order: https://www.fiverr.com/queenfoxalina/create-custom-art-from-your-prompts
