They didn't just compress the game; they rebuilt it from the ground up. They had to redo every single texture in the game. If you look closely at the Switch version (the .nsp version), you might notice the gravel on the ground or the bricks in Novigrad look slightly different than the PC version. That is because they were manually re-authored to look good on a smaller screen while taking up a fraction of the memory.

The team at Saber Interactive faced a dragon of a problem: How do you shrink a 100GB epic into a tiny digital package without losing its soul?

In the gaming community, stands for Nintendo Submission Package . It is a file format used for installing games on the Nintendo Switch.