The (Wii U Archive) format is the modern standard for Wii U emulation, designed to consolidate and compress game data into a single, manageable file. Understanding the WUA Format

The drive to seek out these archives is fueled by a legitimate preservation crisis. The Wii U was Nintendo's least successful home console, and its unique hardware features—the second screen GamePad—make it difficult to emulate or repurpose.

u/PreservationMode Topic: Wii U Preservation, WUA Format, and the State of the Scene