Disc dumps & mirrors
Dusklight needs a supported retail rip of The Legend of Zelda: Twilight Princess for GameCube. This site never hosts or links to copyrighted game data — only how to prepare and verify what you already own.
Rip your own disc
You must dump a disc you legally own. The upstream README points to the Dolphin Wiki ripping guide for hardware and software options. We do not mirror those steps here — follow that article for your drive and platform.
Optional: compress to RVZ
After a clean rip, you can convert .iso to .rvz with Dolphin or nodtool to save disk space. Dusklight can load several container formats when the underlying data matches a supported retail build — re-check SHA-1 if a tool reports a different file.
Mirrors and “free ISO” sites
Program binaries come from GitHub Releases. Game data does not. Random download mirrors are not endorsed — if the hash does not match Setup, treat the image as unsupported.
Next step
Compare your file against the hash table on Setup, then use in-app Select Disc Image.