Nintendo has never released Mario Kart 64 for the PS3. Any PKG file claiming to be Mario Kart 64 for PS3 would be either:

At first glance, it looks like a jumble of console generations, file formats, and adjectives. But to retro-gaming enthusiasts and console homebrew tinkerers, this keyword tells a story of cross-platform hopefulness, technical wizardry, and the eternal pursuit of playing classic Nintendo games on Sony hardware.

If you find a pre-compiled version of the game or need to install emulator PKGs, follow these steps:

However, the persistent rumour of a "PS3 PKG" for Nintendo 64 games comes from two distinct sources:

This is the primary method for playing original N64 ROMs. A port of the Wii64 emulator allows the PS3 to run titles like Mario Kart 64 . Users typically install an emulator PKG file via the Package Manager and load their ROMs from a FAT32-formatted USB drive.

If you have found a .pkg file for the game or its emulator, you can install it using these steps: