All of you are still too young.
My first foray into computer gaming was *writing* a lunar lander "sim" in Fortran (and later PL/1) on an IBM 360/40 mainframe. Input via punchcards (remember the model 029/129 keypunch machines?) or the ops console, output via greenbar paper on a line printer. Hmmm, framerate was 0.1-0.2 fps ...