diff --git a/Scripts/Chunk.cs b/Scripts/Chunk.cs
index d6fff0c..342fe5c 100644
--- a/Scripts/Chunk.cs
+++ b/Scripts/Chunk.cs
@@ -76,8 +76,8 @@ public class Chunk {
         Type type = typeof(T);
         object o = Activator.CreateInstance(type, x, y, this);
 
-        // check if not empty:
-        if (Elements[x,y].GetType() != typeof(Element)) {
+        // check if not empty and overwrite not allowed:
+        if (Elements[x,y].GetType() != typeof(Element) && !Main.Instance.AllowOverwrite) {
             return;
         }
 
diff --git a/Scripts/Main.cs b/Scripts/Main.cs
index 50d9ce8..ac2cde7 100644
--- a/Scripts/Main.cs
+++ b/Scripts/Main.cs
@@ -4,6 +4,7 @@ using Godot;
 
 public partial class Main : Node2D {
 	[Export] public bool DebugMode = false;
+	[Export] public bool AllowOverwrite = true;
 
 	[Export] public int BrushSize = 5;
 	[Export] public float TextureResolution = 0.5f;