This document discusses the principles of level design in video games, with a focus on the approaches used by Nintendo and the design philosophies of Shigeru Miyamoto and Takashi Tezuka. It outlines essential concepts such as player satisfaction, game mechanics, and narrative structures while highlighting the progression and challenges players face in levels. The document further compares other game design methodologies, exemplified by Kim Swift's work, emphasizing a consistent teaching and revealing approach throughout gameplay.