: You can import these into modern software like Photoshop , Blender , or Sweet Home 3D .
Are you trying to on an emulator, or are you looking to import a 3D model into design software? If you tell me your goal, I can give you the exact steps to follow. Sweet Home 3D Forum - Importing OBJ file in Sweethome3D 3DS.rar
: These are typically used for emulators like Citra or for playing on a modded console. : You can import these into modern software
When you see a file with the extension , it is a compressed archive containing a Nintendo 3DS ROM or a 3D model file. To use the data inside, you must first extract it using software like 7-Zip or WinRAR . If you are a Gamer (ROMs) Sweet Home 3D Forum - Importing OBJ file
: Most ROMs downloaded from sites like the r/roms megathread are encrypted and won't work in Citra unless you use a tool like Batch CIA/3DS Decryptor .
: If your download has multiple parts (e.g., .part1.rar, .part2.rar), place them all in the same folder and extract only the first one; the software will automatically combine them into a single .3ds file.
: Use .3ds for emulators and flashcards like Sky3DS. Use .cia if you want to install the game directly to your 3DS home menu using FBI . If you are a 3D Designer