>>54918716In this order:
>Gen 3Hoenn looks really comfy and it's the most adventure-filled game. FRLG don't look as good comparatively but RSE make up for it.
>Gen 1Colored versions specifically. Entire cities having specific color palettes is a really good look. See pic related.
>Gen 6ORAS are really good-looking games and the French architectures in Kalos look good too.
>Gen 2It isn't as good-looking as Gen 1 but still has the neat retro look.
>Gen 4Best-looking mainline DS game. The coloring isn't heavy and taxing on the eye.
>Gen 7Although not as good-looking as Gen 6, the Aloha look is really comfy. LGPE was also pretty to look at.
>Gen 5All over the place but having seasons was really neat.
>Gen 9It could look better for an open-world game but whatever.
>Gen 8Legends Arceus looks awful and SWSH look even worse.