RollerCoaster Tycoon was build with Assembly Language
C programming is too slow. Let's build a Game Completely in Assembly! - This is exactly what Chris Sawyer did to create the popular game RollerCoaster Tycoon!
Chris wrote in assembly language for performance reasons back when only Pentium-class CPU's with 66 MHz were available - two orders of magnitude slower than today's machines. Plus there were no GPU accelerators. Plus the C compilers of the day didn't optimize as well as they do today.
Want to know what he is upto now: https://lnkd.in/d6dyB5Ks