The Wii U Archive (.WUA) format has emerged as the modern gold standard for Wii U emulation and digital preservation. Unlike older formats that required managing fragmented folders or massive, uncompressed disc images, WUA streamlines the experience by bundling everything—the base game, all updates, and every DLC—into a single, compressed file. The Evolution of Wii U ROM Formats
IMPORTANT: Cemu is shifting away from encrypted ROMs (WUX, WUD). It is strongly recommended you use decrypted ROMs (Loadiine, WUA) EmuDeck Wiki wii u wua roms archive
The .wua extension is a specialized archive format created specifically for the Cemu emulator. Unlike traditional formats like WUD (raw disc images) or WUX (compressed disc images) which only contain the base game, a WUA file acts as a "playable zip file". A single .wua file can bundle: Base Game Data: The core software. Game Updates: All necessary patches to the latest version. The Wii U Archive (
Most users create their own archives by converting existing game folders using Cemu’s built-in tools: It is strongly recommended you use decrypted ROMs