> For the Atari 2600, Game Boy, etc., the first cartridges were nothing more than a ROM chip on a printed circuit board. We've actually come full circle on thi

> For the Atari 2600, Game Boy, etc., the first cartridges were nothing more than a ROM chip on a printed circuit board. We've actually come full circle on this one. If you ever disassemble a Nintendo Switch Game Card that has a black area above the metal contacts, it doesn't even have a PCB. It's just a ROM chip, with metal contacts on the bottom shaped differently than your standard BGA pattern, contained in plastic. If it has a green area above the metal contacts, it's a PCB with the chip on the other side.