: Once mounted, the game will appear as a virtual disc on the XMB (main menu), which you can then select to play. Ensuring "Extra Quality" and Compatibility

When we talk about downloads, we are looking for:

For PlayStation 3 enthusiasts using Custom Firmware (CFW) or PS3HEN, finding and installing games in is often the preferred way to expand a digital library. Unlike PKG files that require a lengthy installation process or ISOs that can be difficult to manage on older file systems, JB folder games offer a balance of accessibility and ease of modding. What is a PS3 JB Folder Game?

MGS4 is notorious for installs between every act. A JB folder on dev_hdd0 reduces act transition times from 90 seconds to roughly 25 seconds.