blue is one of the 3 primary colors
Oh wow, I didn't know that! What other colors are primary colors?
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering.
0.99 and an otherwise fun game, we can overlook it". Appadvice wrote ""Blue Defense!" is a fun little game that doesn't clutter up the experience with anything. Those looking for something reminiscent of arcade classics like "Space Invaders", "Galaga", or other vertical shooters will be pleased. If you don't like primary colors, silence, or are afraid of your iPhone getting motion sickness, this game is not for you. Personally, I enjoyed it for a day and didn't