Whoa, hold on a second. Phil, you might want to cancel your plans to build that Nintendo PC. Cause this here NES Cartridge is significantly more full of epic and win. Yes, that was proper grammar right there.
The modder, known as Darkeru on the Ben Heck forums, managed to squeeze an entire NES emulator system, controls, and an LCD screen into an original NES cart. Looks absolutely amazing.
Next challenge, squeeze an entire Jaguar system into a Jaguar cart. The small control would easily fit! Right?