Pokemon styled Touhou fangame based on Pokemon Fire Red, replacing the Pokemon with various Touhou characters, often with three stages (Chibi, normal and EX)
hemogurobin a1c was both the original creator and sprite designer of the official version. He has stopped work on the series for the time being but various programmers/sprite artists have started work on their own versions/new characters.
His designs have caught on in various ways.
Examples of notable designs
Ex Wriggle- More womanly in various ways, including wearing a mostly black dress
Ex Yamame- with all her spider legs shown.
This tag implicates touhou (learn more).