Since a direct, official PKG does not exist, the solution is to . This process is legal if you own a physical copy of Mario Kart 64 and create your own ROM backup (commonly referred to as a "dump").
To use these homebrew methods, your PS3 must be running custom software: mario kart 64 ps3 pkg
But for the five minutes it takes to install it, watch the bubble appear, and hear the opening "Mario Kart 64!" jingle echo through your Sony surround sound system... it feels like magic. Since a direct, official PKG does not exist,