Retro Gaming
I’ve used the word machines because in the UK at least retro gaming is as much about computers and electronic games as it is consoles. So my favourites: 1970s Binatone Pong clone built into two controllers. One held batteries and the other the chip and RF modulator. (Close second was an LED pool/snooker electromechanical game I can’t remember the make) 1980s ZX Spectrum. Just excellent gameplay (see Head Over Heels, Batty, Glider Rider etc) 1990s DOS Games too May to list 2000s GameCube. At the time under-rated but now appreciated for some excellent games
RetroReversing is a really cool site hosting loads of content about decompilations, source leaks, information on ROM formats etc. It's a fantastic resource for finding information about how games tick!