A .pkg file is the official installation format for PlayStation 3 digital games, updates, and DLC. In the case of Silent Hill: Downpour , the PKG contains the full game data, encrypted and signed by Sony, but can be installed on jailbroken PS3 systems or unpacked for RPCS3 (PS3 emulator).
~9 GB free space (install + temporary data).
The iconic Silent Hill fog is thinner in Downpour by design, but PKG installs on failing HDDs sometimes fail to stream textures, making the fog disappear entirely. Install the PKG to an SSD (Solid State Drive) inside your PS3. This fixes texture streaming.
While "PKG" typically refers to the package file format used for installing games on PlayStation consoles, exploring Silent Hill: Downpour
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