You can open a RARC file with Wiimms SZS Tools, ARCTool, or Wexos's Toolbox to extract assets from, add assets to, and repackage RARC files. RARC files are archive files used in Wii and GameCube games...
You can open a RARC file with Wiimms SZS Tools, ARCTool, or Wexos’s Toolbox to extract assets from, add assets to, and repackage RARC files. RARC files are archive files used in Wii and GameCube games. The directories are stored inside a root node. In Super Mario Galaxy games, the RARC archives have .arc extensions. RARC is a big-endian file format. File header offsets are aligned to a 32-byte boundary.
RARC files start with ASCII RARC. Tools that handle RARC files are ARC Tool by tpw_rules and SZS tools by thakis which contains a “RARC Dump” tool, and Wiimms SZS Tools by Wiimm. The original documentation and specs were written by thakis.
RARC has a header, info block and nodes. Each node represents a directory. Nodes contain file entries representing files and directories. File entries have a type flags bitfield. RARC files are often compressed using Yaz0 format, taking .szs extension.
Dolphin Emulator