The PKG patch for Plants vs. Zombies: Garden Warfare on PS3 was a crucial update that addressed several issues and improved the overall performance of the game. The patch fixed various bugs, such as crashes, glitches, and connectivity problems, ensuring that players could enjoy a stable and fun gaming experience. Additionally, the patch added new features, like support for the PlayStation 3's DualShock 3 controller, which allowed for more precise control and a more immersive experience.