Most Nioh repacks are based on the Nioh: Complete Edition (includes all DLCs – Dragon of the North, Defiant Honor, Bloodshed’s End). They strip out other languages, compress audio/video, and offer optional files (e.g., 4K cutscenes or English/Japanese voiceovers).
Looking at the “Nioh Repack” – What You Need to Know nioh repack
If you're looking for information on a specific repack, such as: Most Nioh repacks are based on the Nioh:
If you already own Nioh on Steam/PS4, a repack is unnecessary. If you’re just testing performance, the actual game goes on sale for $15–20 often. A repack saves bandwidth but costs install time and some risk. If you’re just testing performance, the actual game
A is the perfect solution for players who want the full, punishing "Souls-like" experience without the massive bandwidth tax. As long as you have a decent CPU to handle the installation and source your files from reputable repackers, you’ll be ready to face the Yokai in no time.
Here's some general information about Nioh: