: It merges the base game + Update + DLC into one file, so you don't have to manage three separate folders. Space Savings Zstd compression
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Uses advanced compression to reduce folder sizes by roughly 25% on average.
Early compressed formats often caused stuttering because the emulator had to decompress assets on the fly. WUA is optimized for , meaning load times are nearly identical—and sometimes faster—than uncompressed formats due to reduced hard drive seek times.
: While generally stable, some users have reported issues with the WUA compression tool in specific versions of Cemu (like v2.0-52 onwards). This is often due to the emulator getting confused by leftover .app files in game folders. If you run into trouble, try navigating to your game's directory and deleting any .app files, leaving only the standard code , content , and meta folders intact before attempting conversion again.
Cemu installed (Version 2.0 or newer is highly recommended).
Nintendo v. RomUniverse (2021) resulted in a $2.1 million judgment against the site owner. In 2024, a similar case against a major ROM aggregator ended with the operator handing over domain names and paying statutory damages.
code : Holds the executable binaries (such as .rpx files) and system configurations.
(Version 2.0 or newer is recommended for the best WUA support). Title Manager Find the game you want to compress in the list. Right-click the game and select Convert to compressed Wii U archive (.wua)
While famous on the Switch, it was built natively for the Wii U. On Cemu, this game becomes a visual masterpiece, capable of running at ultra-wide resolutions and high framerates that the Switch hardware simply cannot achieve.






