I--- The Sims 3 Ps3 Pkg [work] «EXCLUSIVE - How-To»

If you're referring to a ".pkg" file in the context of the PS3, you're likely talking about a file format used for distributing and installing game and application data on the PlayStation 3. PKG files are package files used by the PlayStation 3 system software to install updates, games, and other content.

The Sims 3 on PS3 included the expansion pack integrated by default. However, separate DLC (like High-End Loft Stuff or Diesel Stuff ) was released as smaller PKG files. i--- The Sims 3 Ps3 Pkg