Why Old Game Pixels Look Different on Flat Screens
Many early games were drawn for televisions that did not display each pixel as a crisp square. A CRT (the bulky television with a glass tube) painted the image in lines, and its signal and phosphor glow softened neighboring colors. That blur was not merely a flaw: artists could use it as part of the picture.
On a modern LCD or OLED screen, each pixel is a sharply defined rectangle. When a low-resolution game is enlarged, the display must decide how to map its small grid onto a much larger one. If the scale does not divide evenly, some original pixels become wider or taller than others. The result can look jagged, blocky, or uneven in motion.
The Old Picture Was Designed to Be Blended
Limited color palettes made the display itself useful to artists. A technique called dithering places two colors in a pattern so that, from a normal viewing distance, they can appear like a third. On a CRT, the pattern could blur together. On a crisp screen, the separate dots are easier to see, so a smooth-looking shadow may become a conspicuous checkerboard.
Likewise, artists often arranged pixels into clusters that read clearly when softened by the original display. A modern screen reveals the grid without that blending, changing the apparent shapes and shading even though the game’s stored artwork is unchanged.
Why “Sharper” Is Not Always More Faithful
A basic enlargement method, called nearest-neighbor scaling, repeats each pixel as a block. It preserves the original colors but can make the grid especially obvious; other filters smooth the image, sometimes blurring details the artist placed deliberately. CRT filters try to recreate some of the old display’s scan lines and color blending.
There is no single treatment that suits every game. But the key tradeoff is simple: the original image was designed for a particular screen, not for maximum sharpness. A modern display can show every pixel precisely while making the picture feel less like the one players remember.
