Emulators with a CRT TV setting are great at showing retro games as they used to look, but they miss out on the joy of thwacking the top of your screen every time the visuals look weird. Fortunately, an ex-Sega engineer has created a Famicom (NES) emulator for macOS that requires some ‘percussive maintenance’ to fix visual issues, and it feels like I’m back in the 90s again.