Assuming you have a PS3 on Custom Firmware (e.g., Evilnat, Rebug) or Hybrid Firmware (HFW) with HEN:
God of War 3 was released as a disc game, but also as a digital PSN title. The digital version’s PKG is locked. Without the correct RAP file, the game will either: god of war 3 pkg and rap
In short: PKG = the game data. RAP = the key to unlock it. Assuming you have a PS3 on Custom Firmware (e
God of War 3 is not a small indie title. It was a flagship AAA game. The PKG for GOW3 typically clocks in at 33GB to 38GB. Unlike smaller PS2 classics, this game requires internal storage (internal HDD) and specific folder structures (GAMES or GAMEZ) if using folder format, but in PKG format, it requires the HDD to be formatted correctly. In short: PKG = the game data