The Matrix Effect

A console application that renders the iconic Matrix digital-rain effect — cascading green glyphs with bright leading heads, fading trails, and random flicker — right in your terminal.

Features

• Falling glyph drops — multiple independent drops per column, each with its own speed.
• Brightness tiers — bright-white heads fade through bright green, green, and dark green as trails age.
• Half-width katakana glyphs plus digits and symbols, for the authentic look.
• Random flicker — dim cells randomly swap glyphs for a living, shimmering feel.
• Live terminal resize — the effect re-initializes when you resize the window.
• Fully configurable via MatrixConfig (glyph set, frame delay, drop density, spawn rate, flicker amount).
• ANSI/VT rendering — a single buffered write per frame for smooth, flicker-free output.

Requirements

• .NET 9 SDK or later
• A terminal with ANSI/VT escape-sequence support (Windows Terminal, modern PowerShell, most Unix terminals)

Running

From the repository root:

dotnet run --project Matrix

Press any key to exit.

Configuration

The effect is driven by MatrixConfig in Matrix/MatrixEffect.cs. Adjust the values in Matrix/Program.cs before running:

Property	Default	Description
Glyphs	katakana + digits + symbols	The pool of characters used for the rain.
MaxBrightness	20	Lifespan of a glyph; higher means longer-lasting trails.
FrameDelayMs	60	Delay between frames in milliseconds; lower is faster.
MaxDropsPerColumn	3	Maximum simultaneous drops in a single column.
SpawnChancePercent	3	Per-frame chance (%) a column spawns a new drop.
FlickerDensity	2	Flicker iterations per frame = window width / this value.

Example — a faster, denser rain:

var config = new MatrixConfig
{
    FrameDelayMs = 40,
    MaxDropsPerColumn = 5,
    SpawnChancePercent = 6,
};

Project structure

Matrix/
  Program.cs               Entry point; builds the config and runs the effect.
  MatrixEffect.cs          The active effect: MatrixConfig + MatrixEffect.
  ConsoleMatrixRainEffect.cs   Older task-based implementation (not wired up).
Matrix.sln                 Solution file.
docs/                      Screenshots / recordings for this README (The_Matrix.gif, The_Matrix.png).

Media

The animation above is docs/The_Matrix.gif; a static still is available at docs/The_Matrix.png. To refresh them, run the effect, capture a new screenshot or short recording, overwrite the files in docs/, and commit.