Given that the original game predated those sorts of systems hitting consumer desktops by years, it shouldn't be surprising at all. This is what early 3d games

Given that the original game predated those sorts of systems hitting consumer desktops by years, it shouldn't be surprising at all. This is what early 3d games & software rendering did before accelerators came along, and as CPUs got faster in that interim there were plenty of fully polygonal software rendered engines as well.