NKit files are directly playable in the Dolphin Emulator and the Swiss homebrew for GameCube.
NKit - all about how to use it, and how it's supposed to be used nkit 14 fully loaded best
Contains the necessary data to verify and repair GameCube disc images. NKit files are directly playable in the Dolphin
Download NKIT v1.4, source the latest WiiPartitionDatabase, and spend an afternoon converting your library. The 60% space savings and flawless emulation performance make it the definitive "best" choice for preserving Nintendo's sixth and seventh generation legacy. The 60% space savings and flawless emulation performance
The Ultimate Guide to NKit 1.4 Fully Loaded: Preservation Made Easy
The NKit 14 Fully Loaded format represents the pinnacle of preservation for Nintendo GameCube and Wii enthusiasts. By combining maximum data compression with a "Fully Loaded" library of partition data, this specific configuration allows users to restore their games to a 1:1 bit-perfect match of the original retail discs.