GameCube File Tools (GCFT) is a GUI tool for editing the following common file formats used by GameCube games:

• GCM (GameCube ISOs)
• RARC (archives)
• BTI (images)
• JPC (particle effect archives)
• Yaz0 (compression)

Features:

• Open and view GCMs, RARCs, BTIs, and JPCs
• Extract and replace individual files in GCMs and RARCs
• Extract all files in a GCM, RARC, or JPC at once to a folder
• Import a folder of files onto an existing GCM or RARC, overwriting the existing files
• Create brand new RARCs from scratch
• Add/delete files in GCMs and RARCs, as well as folders in RARCs
• Convert BTI images to PNG and back
• Dump all BTI images in a GCM or a RARC to a folder as PNG
• Edit the header attributes of BTI images (e.g. image format, palette format, wrapping, filter mode)
• Extract and replace the BTI textures embedded in J3D BDL and BMD models and BMT material tables, and JPC particle archives
• Import a folder of particle files onto an existing JPC, adding/overwriting all the particles from the folder to the JPC
• Viewing DOL executable sections, and converting between offsets within the DOL file and RAM addresses in the game’s memory
• Compress and decompress Yaz0 files

Download the latest version of GCFT here