If you are still using the old Loadiine folder structure in 2025, you are actively making your emulation experience slower and more cumbersome. The .wua Wii U ROM format is a rare example of the emulation community solving a real problem with an elegant technical solution. It eliminates folder clutter, slashes storage requirements by nearly half, and merges updates/DLC seamlessly.
Open Cemu 2.0+, convert your top 10 most-played Wii U games to .wua , and delete the original raw dumps. You will free up 50-100 GB of space and enjoy a cleaner, faster emulation setup. .wua wii u roms
Whether you are a preservationist building a complete Wii U library or a casual player who just wants to revisit Pikmin 3 , the .wua format is your best friend. Embrace the archive. Stay updated with the latest Cemu changelogs at cemu.info. For tools to manage your .WUA collection, check out the Cemu subreddit (r/cemu). If you are still using the old Loadiine
| Format | Structure | Pros | Cons | | :--- | :--- | :--- | :--- | | | [Game Name]/code/content/meta | Easy to modify | Thousands of small files; slow loading; huge disk footprint | | WUD/WUX (Disc) | Single .wud or .wux file | Authentic disc copy | Often encrypted; requires separate keys; no updates/DLC merged | | .WUA | Single .wua file | Compressed; self-contained; includes updates | Requires Cemu 2.0+ | Open Cemu 2