If you downloaded games from sites listing them in "no-intro" formats (like Myrient), they may already be compressed, but if you have raw .wud files, WudCompress is the tool you need.
The amount of storage space saved depends entirely on how much content is on the game disc. The table below illustrates standard space savings achieved using the tool: Game Title Original WUD Size Compressed WUX Size Storage Space Saved 88.8% Mario Kart 8 79.0% Super Smash Bros. for Wii U 33.0% The Legend of Zelda: Breath of the Wild 44.2% How to Use WudCompress WudCompress
Wait for the process tracker to reach . The tool will output your finished .wux file in the same directory. Method 2: Standard Command-Line Usage If you downloaded games from sites listing them
The tool will automatically detect the file type and perform the appropriate operation. for Wii U 33
While its algorithm is simple, its results are nothing short of impressive. To illustrate the effectiveness of WudCompress, here are real-world compression results provided by the developer using the tool on standard 23.3GB WUD files:
When physical Wii U game discs are dumped for archiving or emulation, the resulting file is a raw byte-for-byte copy known as a .wud file.