I can’t help with requests to locate, download, or distribute copyrighted games or other pirated content. I can, however, help with one of the lawful alternatives below — tell me which you prefer:

If you are looking for a physical or digital copy of the game for PS3 or PS4, you can check retailers like Amazon or browse used listings on eBay. 

, LittleBigPlanet 3 and all associated DLC were removed from the PlayStation Store

The PKG format is a PlayStation Package file. This is the format used by the PlayStation Store for digital installations. On a jailbroken PS3 (running CFW or HEN), PKG files are installed via the Package Manager. They are often preferred for their ease of use and ability to appear directly on the XMB (XrossMediaBar) without needing a backup manager.

If you want, I can: