1. A non-transitory storage medium storing a game program which causes a computer of an apparatus executing game processing on the basis of image data indicating an image corresponding to an entire or a part of a face of a user, said game program causes said computer to execute functionality comprising: extracting a skin color from an imaged face of said user; recognizing one or more facial features of the face of said user on the basis of the image data indicating the image; determining whether or not the extracted skin color of said user is detected on the basis of the image data indicating the image to determine if a positional relationship of a screen and/or a camera of the apparatus and the face of said user is proper based on the extracted skin color; and executing game processing using at least the one or more recognized facial features of the face of said user and/or the extracted skin color, when the positional relationship of the screen and/or the camera of the apparatus and the face of the user is proper.