diff --git a/SrcMod/Shell/ObjectModels/Config.cs b/SrcMod/Shell/ObjectModels/Config.cs
new file mode 100644
index 0000000..87b5ed8
--- /dev/null
+++ b/SrcMod/Shell/ObjectModels/Config.cs
@@ -0,0 +1,76 @@
+namespace SrcMod.Shell.ObjectModels;
+
+public struct Config
+{
+    public const string FilePath = "config.json";
+
+    public static readonly Config Defaults;
+
+    public static Config LoadedConfig
+    {
+        get => p_applied;
+        set
+        {
+            p_applied = value;
+            p_changes = p_applied.GetChanges(Defaults);
+        }
+    }
+
+    private static Config p_applied;
+    private static ConfigChanges? p_changes;
+
+    static Config()
+    {
+        Defaults = new();
+    }
+
+    public string[] SteamDirectories;
+
+    public Config ApplyChanges(ConfigChanges changes) => this with
+    {
+        SteamDirectories = changes.SteamDirectories ?? SteamDirectories
+    };
+    public ConfigChanges GetChanges(Config? baseConfig = null)
+    {
+        Config reference = baseConfig ?? Defaults;
+        return new()
+        {
+            SteamDirectories = reference.SteamDirectories == SteamDirectories ? null : SteamDirectories
+        };
+    }
+
+    public static void LoadConfig(string basePath)
+    {
+        string fullPath = Path.Combine(basePath, FilePath);
+
+        if (!File.Exists(fullPath))
+        {
+            p_applied = Defaults;
+            p_changes = null;
+            return;
+        }
+        StreamReader reader = new(fullPath);
+        JsonTextReader jsonReader = new(reader);
+        p_changes = Serializer.Deserialize<ConfigChanges?>(jsonReader);
+        jsonReader.Close();
+        reader.Close();
+
+        p_applied = p_changes is null ? Defaults : Defaults.ApplyChanges(p_changes.Value);
+    }
+    public static void SaveConfig(string basePath)
+    {
+        string fullPath = Path.Combine(basePath, FilePath);
+
+        if (p_changes is null || !p_changes.Value.HasChange)
+        {
+            if (File.Exists(fullPath)) File.Delete(fullPath);
+            return;
+        }
+
+        StreamWriter writer = new(fullPath);
+        JsonTextWriter jsonWriter = new(writer);
+        Serializer.Serialize(jsonWriter, p_changes);
+        jsonWriter.Close();
+        writer.Close();
+    }
+}
diff --git a/SrcMod/Shell/ObjectModels/ConfigChanges.cs b/SrcMod/Shell/ObjectModels/ConfigChanges.cs
new file mode 100644
index 0000000..909e662
--- /dev/null
+++ b/SrcMod/Shell/ObjectModels/ConfigChanges.cs
@@ -0,0 +1,8 @@
+namespace SrcMod.Shell.ObjectModels;
+
+public record struct ConfigChanges
+{
+    public bool HasChange => SteamDirectories is not null;
+
+    public string[]? SteamDirectories;
+}
diff --git a/SrcMod/Shell/ObjectModels/ShellConfig.cs b/SrcMod/Shell/ObjectModels/ShellConfig.cs
deleted file mode 100644
index d347d11..0000000
--- a/SrcMod/Shell/ObjectModels/ShellConfig.cs
+++ /dev/null
@@ -1,46 +0,0 @@
-namespace SrcMod.Shell.ObjectModels;
-
-public class ShellConfig
-{
-    public const string FilePath = "config.json";
-
-    public static ShellConfig Defaults => new()
-    {
-        SteamDirectories = new[]
-        {
-            "Temp"
-        }
-    };
-    public static ShellConfig LoadedConfig => p_data ?? Defaults;
-
-    private static ShellConfig? p_data;
-
-    public string[] SteamDirectories;
-
-    public static void LoadConfig(string basePath)
-    {
-        string fullPath = Path.Combine(basePath, FilePath);
-
-        if (!File.Exists(fullPath))
-        {
-            p_data = null;
-            return;
-        }
-        StreamReader reader = new(fullPath);
-        JsonTextReader jsonReader = new(reader);
-        p_data = Serializer.Deserialize<ShellConfig>(jsonReader);
-        jsonReader.Close();
-        reader.Close();
-    }
-
-    public static void SaveConfig(string basePath)
-    {
-        string fullPath = Path.Combine(basePath, FilePath);
-
-        StreamWriter writer = new(fullPath);
-        JsonTextWriter jsonWriter = new(writer);
-        Serializer.Serialize(jsonWriter, p_data);
-        jsonWriter.Close();
-        writer.Close();
-    }
-}
diff --git a/SrcMod/Shell/Shell.cs b/SrcMod/Shell/Shell.cs
index 634ab0a..78acb5a 100644
--- a/SrcMod/Shell/Shell.cs
+++ b/SrcMod/Shell/Shell.cs
@@ -50,7 +50,7 @@ public class Shell
 
         // Load config.
         if (ShellDirectory is null) Write("[WARNING] Could not load config from shell location. Defaults will be used.");
-        else ShellConfig.LoadConfig(ShellDirectory);
+        else Config.LoadConfig(ShellDirectory);
 
         // Load modules and commands.
         List<Assembly?> possibleAsms = new()
@@ -254,7 +254,7 @@ public class Shell
                 }
 
                 if (ShellDirectory is null) Write("[WARNING] Could not save config to shell location. Any changes will be ignored.");
-                else ShellConfig.SaveConfig(ShellDirectory);
+                else Config.SaveConfig(ShellDirectory);
                 return;
             }
         }