Comment by zozbot234

High-DPI OLED can do even better than the analog effect of CRT's. The latter is basically like a Gaussian blur (which is the best you can do in the purely analog domain!) but a high-DPI screen can use Lanczos upscaling for a much sharper effect, somewhat reminiscent of the look of oil or water-color paintings. There are also pixel-art specific upscaling algorithms that preserve the limited color palette of old retrogames while still smoothing out lines and curves.