One of the only pleasant side effects of the Covid-19 shutdown of public life is that the tedium of confinement to certain spaces and the disappearance of physical interaction gave people a bunch of time to fill. Many of us just watched everything on Netflix while others built silly and amazing stuff like a DOS subsystem for Linux. The underlying mechanisms are totally bonkers and it’s pretty amazing that it works given the amount of emulation that’s going on.
It’s available from here if you’re looking for something pointless and rewarding to play around with.