NSZ is a compressed format designed by the homebrew community as an evolution of the NSP. It uses compression, which is significantly more efficient than the standard Nintendo compression.
Leo guided Mario across the sand. The physics felt heavier here, more urgent than the floaty joy of 3D World. He saw a Kitty Shine shivering on a pedestal. As he approached, a deep, guttural roar shook the controller in his hands. -Switch NSP NSZ- Super Mario 3D World Bowsers Fury