(What is Aspect Ratio Correction? Back in the 80s and 90s, 320x200 games were originally played on CRT monitors with display areas that had a 4:3 aspect ratio. This means that because 320x200 isn't a 4:3 resolution, a pixel displayed in 320x200 mode was rectangular in appearance instead of being square. Modern monitors, however, don't have non-square pixels. As such, we provide our "ARC" download sizes that make use of aspect ratio correction, so that you can see these screenshots the way they were originally seen - the Sierra logo should be a circle, not an oval!)