I remember Keen games running on a computer that should have been used for pure MSDOS CNC lathe control in my metal working class.
It the same time my friend ran my Microsoft Monster Truck Madness on the computers in the "Computer Room" (yeah those were a thing) and I had to reassure the lecturer there that my CD ROMs didn't contain a virus.
The whole thing was gay as shit.
Thank fuck we have iPads and Progressive Web Apps right now.