The .part3.rar extension indicates this is the third part of a set. You cannot extract the game data from this file alone; you must have all parts (e.g., part1, part2, part3, etc.) in the same folder.
Users playing the XCI version on emulators initially reported issues such as visual glitches and long loading times, though these were largely resolved by emulator updates and game patches like the Final Horizon Update . Sonic Frontiers (XCI).part3.rar
The file is one segment of a split-archive containing a Nintendo Switch ROM for Sonic Frontiers . In this format, the full game data (usually several gigabytes) is divided into smaller "parts" to make downloading and sharing more manageable. Key Technical Details you must have all parts (e.g.