Back then, that was pretty good. The best resolution of any other video game console was 320 by 192. NTSC can't show much more detail than that when using an RF

Back then, that was pretty good. The best resolution of any other video game console was 320 by 192. NTSC can't show much more detail than that when using an RF or composite input. Higher resolutions didn't appear until the PC Engine/TurboGrafx-16 in 1987 and the Super Famicom/SNES in 1990.