Doraemon Butterfly Coloring is one of those simple, nostalgic Flash games where you just color in a butterfly-shaped Doraemon. The outline’s already there—you pick colors and click to fill sections, like a digital coloring book. It’s not complicated, but there’s something satisfying about watching the blue robot cat turn into a weirdly pretty butterfly mosaic.

You start with a basic palette, but I remember messing around with the gradients to make the wings look metallic. The controls are straightforward, though sometimes the fill tool acts up if you click too fast. Perfect for killing five minutes when you’re bored.