diff --git a/example/factorial.hz b/example/factorial.hz
new file mode 100644
index 0000000..e8f98e5
--- /dev/null
+++ b/example/factorial.hz
@@ -0,0 +1,10 @@
+fun factorial (n: int): int = do
+    case n of
+        | 0 -> return 1;
+        \ return n * factorial(n - 1);
+    end;
+end;
+
+fun main: void = do
+    factorial(5) |> @write(_);
+end;
\ No newline at end of file