The Steam Deck is arguably the best way to play Super Mario Sunshine today. Because the Deck has analog triggers, it replicates the GameCube controller perfectly. Install EmuDeck, drag your compressed file into the GameCube folder, and enable "Widescreen Hack" in Dolphin settings.
For PC gamers, the Dolphin Emulator is the gold standard for GameCube and Wii games.
If you are looking for the game to play on a low-end PC, "compression" won't help performance significantly. Performance depends on your CPU and GPU.
Recommended Specs:
Tips for Low-End PCs:
A common myth is that highly compressed games run slower because the CPU has to "decompress on the fly."
The Truth for GameCube Emulation:
Verdict: Compress it all the way. Stick with .rvz at compression level 5 or 6. You will not notice any frame drops.
If you are looking to save space on your hard drive for emulation, the only recommended method is converting the ISO to the GCZ (GameCube Zip) format.
How to create a GCZ file (if you own the game): super mario sunshine highly compressed
So you have a 400MB .rvz file of Super Mario Sunshine. Now what?
There are three primary reasons gamers hunt for this specific file type:
This is the biggest danger. Many websites promise a 200MB download of a GameCube game to bait users. These files are often disguised executable programs (.exe) that contain malware, spyware, or bloatware. A GameCube game file should always be an .iso, .gcm, or contained within a safe archive like .zip or .rar. If a site asks you to run an .exe installer to play the game, do not do it. The Steam Deck is arguably the best way