Here is the technical breakdown of how this is achieved:

If you clarify whether you already own the original disc and need help with compression tools, I can walk you through that process step by step.

Once you have the file, you need to extract and play it. Here is the workflow for the three most common devices.

, "highly compressed" versions are popular because they strip away that unnecessary filler. Best Methods for High Compression You can significantly reduce the file size of your Need for Speed: Most Wanted ISO using these specialized formats: RVZ Format (Best for Dolphin Emulator) This is the modern standard for the Dolphin Emulator It can compress GameCube files by up to depending on the game, with no loss in performance. How to do it : Right-click the game in Dolphin, select Convert File , and choose NKit (.nkit.iso) (Best for Original Hardware) If you are playing on an actual GameCube via and an SD adapter, is often the only compressed format that works.