Some modders have created PKG versions where the EBOOT has been hex-edited to skip the mandatory hard drive installs. This means the game streams directly from the PKG data 100% of the time.
: Digital versions populate directly on the XMB (Cross Media Bar). Unlike ISO files, which must be "mounted" using homebrew tools like multiMAN or webMAN before they appear, a PKG acts as a native application. metal gear solid 4 ps3 pkg better