The document discusses various aspects of designing game worlds, including physical, time, environmental, cultural, and emotional elements. Physical aspects include the spatial dimensions, scale, and borders of the game world. Time aspects cover time limits, variable pacing, anomalous time effects, and letting players adjust the speed of time. Environmental aspects relate to the physical surroundings, artwork style, and cultural context. Emotional aspects involve eliciting emotions in players through storytelling, social interactions, and fun gameplay.