A level scrolled slowly by a camera moved by hand, a fraction of a pixel a frame, at zoom 3, with clouds and hills behind it at their own pace. Gammix flies in front, pinned to the screen at its own size.
With pixelSnap: 'screen', the default for pixel art, everything (the camera and the far layers too) is drawn on whole pixels of the screen: every pixel of the art stays three wide, and even the clouds, at a tenth of the camera, glide one screen pixel at a time.
Press P to go through the modes while it scrolls (useGame().setPixelSnap). 'game' draws on whole pixels of the art, as the consoles did: just as crisp, but the slow clouds jump three screen pixels at once. 'off' draws between pixels: watch the edge of the grass, its columns come out a screen pixel narrower or wider from frame to frame, and the level ripples. Slower is easier to see: the arrows change the speed and Space stops it.