Emulation itself is entirely legal in most jurisdictions, provided you are using software built from scratch without proprietary code. However, downloading game ISOs from third-party websites violates copyright laws. Always dump your own retail copy of the game. Additionally, avoid downloading executable (.exe) files claiming to be a "standalone Super Mario Sunshine PC Port," as these are often malicious files or phishing attempts. Stick exclusively to the trusted Dolphin emulator ecosystem and verified modding forums. Future Prospects: Decompilation Projects
Beyond preservation and enhancement, some creators have taken a bolder path: completely reimagining Super Mario Sunshine from the ground up using modern game engines.
If you are researching the game's structure for a project or guide, here are the essential technical requirements for completion: Total Shine Sprites Story Completion