Before you begin
The Nintendo 64 is home to some of the most iconic video games of the cartridge era of consoles. But some of those games are locked behind a region lock. Thankfully, removing this lock, and making your device universal, is very easy, and mostly requires you to remove the top cover. Things you will need In addition to the tools, you will need a universal cartridge slot. You can order this from the Shapeways website, or you can 3D print the slot using this .sti file from Thingiverse. Alternatively, if you don't have the ability to do either, you can use a Dremel to remove the plastic from the existing slot as shown in the video by Nintendrew, but it is highly recommended that you use the first two options for a cleaner look, or if you intend to resell the device.