Matrix Rain

Green code cascades down the screen with fading trails.

Pixel Scenes · a single painted seed plus one Phlux rule, simulated live · 96×96 grid

The rule that makes it move

This is the whole thing. Phluxel runs it on every cell, every step — the animation is what happens when you repeat it.

PARAM _rate = 5; PARAM _fade = 74; LET _g = {MAX, (N.G * 0.995), (G * _fade * 0.01)}; Y == 0 ? (RN < _rate ? [255, 190, 255, 190] : [255, 0, {SAT, G * _fade * 0.01}, 0]) : [255, {SAT, _g * 1.6 - 330}, _g, {SAT, _g * 1.6 - 370}]

Paste it into the Rule Editor, or pick Matrix Rain from the template list and skip the typing.

Make it yourself

1. Open Phluxel and start a new field, or click Matrix Rain in the starter gallery to get this exact setup.
2. Leave Wrap edges off — this one is meant to have real borders.
3. Press play. Change colours or numbers while it runs; you never have to stop and restart.
4. Export a seamless loop as GIF, APNG, MP4, a PNG sequence, or a sprite sheet.