About the Void effect
Void is the most minimal effect in the collection. For every cell it measures the distance from the centre of the screen and feeds it into a sine wave that travels outward over time. Where the wave peaks, a dot appears; slightly below the peak, a colon. Everything else stays black. The result is a set of thin concentric rings that ripple out from the centre, like drops falling into still, dark water or a tunnel receding into the screen. With so few characters on screen it is extremely calm and very light to render, which makes it ideal behind dense text or as an idle screen. White or cyan on black looks hypnotic; red gives an ominous, horror-game mood. Speed it up for a warp-tunnel feel, or slow it right down for a breathing rhythm.