8bit Workshop
Back in 2006 I heard about the Atari 2600 homebrew scene and was fascinated to read about the mind-boggling tricks required to write a game for the system (like, coding to the TV raster beam... madness!). I went down the rabbit hole for a while and learned 6502 asm, and ended up with this "sort of a game" - https://github.com/mrspeaker/plops.It was a great learning experience and certainly made me respect the devs of the day - who were performing miracles given the hardware constraints, and luck of modern debugging tools!