While Jump Physics are common in video game worlds, and even the lowliest platforming hero is commonly capable of a Double Jump, this is comparatively much rarer: Video games that actually let your character fly freely about the world. From a design standpoint, this seems logical. After all, if your character can fly anywhere, what's to stop them from flying to distant parts of the level and completely avoiding all the obstacles you planned for them? And even moreso: How do you keep them from flying off the edges of the level (or world map) without having to rely on those Invisible Walls?