.GCZ File Extension
File TypeCompressed GameCube/Wii ROM
This file is saved in a binary format, which requires a specific program to read its contents.
What is a GCZ file?
Nintendo GameCube or Nintendo Wii game file saved as a compressed disk image; contains a copy of the data from a game disc, but compresses it to save disk space; similar to a .GCM file, except that is it compressed; can be created and opened with the Dolphin emulator.