Unmatched compression ratios, native support in Dolphin, and zero performance loss during gameplay. It can also be easily decompressed back into a bit-perfect 1:1 original ISO.
For Steam Deck users, EmuDeck includes a built-in ROM compression tool that supports RVZ format for GameCube and Wii games. It can scan your ROM folders and perform bulk compression or decompression, making it ideal for portable devices with limited storage. gamecube rom highly compressed
Extremely small; preserves "NKit" hashes for verification but can have loading issues on some hardware. Older Dolphin Unmatched compression ratios, native support in Dolphin, and
Zero impact. Modern desktop CPUs decompress Zstd faster than the emulator can read the data. Load times may increase by 0.5–1 second, but in-game FPS remains identical. Unmatched compression ratios