Even the side scrolling games of the early 90s required ingenious hacks to make them work on the hardware of the time. Game consoles at the time had hardware a

Even the side scrolling games of the early 90s required ingenious hacks to make them work on the hardware of the time. Game consoles at the time had hardware accelerated sprite scrolling; personal computers did not and had to redraw sprites manually to scroll but the games used some very interesting hacks to avoid having to redraw most of the screen and create the illusion of fluid movement by only redrawing parts of it. Some of the absolute hacks to make games run on the Gameboy were even more impressive.