File Formats

List of file formats used in each port of both episodes of Sonic the Hedgehog 4.

Sonic the Hedgehog 4: Episode I

Common/Shared

• CPK - Archive file
• AMB - Archive file
• DDS - Image file
• AAX - Audio file
• ADX - Audio file
• CSB - Audio archive
• MSG - Text file

Microsoft Windows

• ZNO - Model file
• ZNM - Animation file

Mobile

• DZ - Archive file (OBB file is the same format)
• PNG - Image file
• PRV - Sprite/Texture file
• INO - Model file
• INM - Animation file
• MP3 - Audio file
• WAV - Audio file

Wii

• GVR - Sprite/Texture file
• GNO - Model file
• GNM - Animation file
• BRSAR - Audio archive

PlayStation 3

• CNO - Model file
• CNM - Animation file

Xbox 360

• ENO - Model file
• ENM - Animation file

Sonic the Hedgehog 4: Episode II

Common/Shared

• CPK - Archive file
• AMB - Archive file
• DDS - Sprite/Texture file (Windows, Mobile) (The mobile version's .DDS files are in a different format than the standard .DDS files)
• AAX - Audio file
• ADX - Audio file
• CSB - Audio archive

Microsoft Windows

• ZNO - Model file
• ZNM - Animation file

Mobile

• LNO - Model file
• LNM - Animation file
• WAV - Audio file
• MP4 - Video or audio file (Music files are stored as MP4 files instead of WAV files)