diff --git a/30_Cube/csharp/Program.cs b/30_Cube/csharp/Program.cs
index f22208ac..803a569a 100644
--- a/30_Cube/csharp/Program.cs
+++ b/30_Cube/csharp/Program.cs
@@ -5,4 +5,6 @@ global using static Cube.Resources.Resource;
 
 using Cube;
 
-new Game(new ConsoleIO(), new RandomNumberGenerator()).Play();
+IRandom random = args.Contains("--non-random") ? new ZerosGenerator() : new RandomNumberGenerator();
+
+new Game(new ConsoleIO(), random).Play();
diff --git a/30_Cube/csharp/README.md b/30_Cube/csharp/README.md
index 9100e6f8..7bea3d88 100644
--- a/30_Cube/csharp/README.md
+++ b/30_Cube/csharp/README.md
@@ -9,4 +9,4 @@ allows the game to be run in a deterministic (non-random) mode.
 
 Running the C# port without command-line parameters will play the game with random mine locations.
 
-Running the port with a `-d` command-line switch will run the game with non-random mine locations.
+Running the port with a `--non-random` command-line switch will run the game with non-random mine locations.
diff --git a/30_Cube/csharp/ZerosGenerator.cs b/30_Cube/csharp/ZerosGenerator.cs
new file mode 100644
index 00000000..4490f606
--- /dev/null
+++ b/30_Cube/csharp/ZerosGenerator.cs
@@ -0,0 +1,10 @@
+namespace Cube;
+
+internal class ZerosGenerator : IRandom
+{
+    public float NextFloat() => 0;
+
+    public float PreviousFloat() => 0;
+
+    public void Reseed(int seed) { }
+}
\ No newline at end of file