Right-click the game in your library to configure custom GPU settings (WWE 2K14 runs flawlessly at 4K resolution on mid-range modern PCs). Expanding the Game: DLC and Modding
If you are setting up your console for this game, please let me know: Are you using or PS3HEN ? Do you need help formatting a USB drive to NTFS/FAT32 ? Share public link
Your console must be running homebrew firmware. This means having either Custom Firmware (CFW) or PS3HEN (Homebrew Enabler) installed. A standard, retail PS3 will not recognize or install unofficial PKG files.
For the PS3, a .pkg file is a container format that includes the game's core data, updates, and downloadable content (DLC).
Disclaimer: You must own a legally acquired copy of the game to use this file. Modifying your console can void warranties.