Furthermore, emulators like now support loading .rvz (Dolphin’s native compressed format) directly. You can convert your ISO to RVZ within Dolphin, achieving 40-60% compression without loss of quality.
Fit hundreds of games on a single SD card or USB drive.
As of 2025, new compression techniques are emerging using and Zstandard (zstd) . These algorithms can shrink a 4.7GB Wii game down to nearly 200MB without stripping data, but they require massive RAM (16GB+) to decompress.
