In the context of the PlayStation 3 (PS3) homebrew and emulation scene, and RAP files represent the two critical halves of digital content delivery and authentication. While they are often discussed as mere technical hurdles, they are the architectural pillars that allow a modded system or emulator to mirror the behavior of the original PlayStation Network (PSN). The PKG: The Digital Container
Your PKG game is now unlocked. Launch it from the XMB like a normal PSN game. pkg rap ps3