diff --git a/AquaMai/AquaMai.csproj b/AquaMai/AquaMai.csproj
index 090320cc..700ae39a 100644
--- a/AquaMai/AquaMai.csproj
+++ b/AquaMai/AquaMai.csproj
@@ -276,6 +276,7 @@
     <Compile Include="UX\CustomVersionString.cs" />
     <Compile Include="UX\DemoMaster.cs" />
     <Compile Include="UX\DisableReboot.cs" />
+    <Compile Include="UX\ExtendTimer.cs" />
     <Compile Include="UX\LoadJacketPng.cs" />
     <Compile Include="UX\LoadAssetBundleWithoutManifest.cs" />
     <Compile Include="UX\QuickSkip.cs" />
diff --git a/AquaMai/AquaMai.toml b/AquaMai/AquaMai.toml
index 182abdfa..c31a103e 100644
--- a/AquaMai/AquaMai.toml
+++ b/AquaMai/AquaMai.toml
@@ -33,6 +33,8 @@ DemoMaster=true
 # Execute some command on game idle or on game start
 ExecOnIdle=""
 ExecOnEntry=""
+# Change every timer to 200 seconds
+ExtendTimer=true
 
 [Performance]
 # Disable some useless delays to speed up the game boot process
diff --git a/AquaMai/Config.cs b/AquaMai/Config.cs
index 3d5f41a3..cf07b56c 100644
--- a/AquaMai/Config.cs
+++ b/AquaMai/Config.cs
@@ -25,6 +25,7 @@ namespace AquaMai
             public bool QuickSkip { get; set; }
             public bool RandomBgm { get; set; }
             public bool DemoMaster { get; set; }
+            public bool ExtendTimer { get; set; }
             public string CustomVersionString { get; set; }
             public string ExecOnIdle { get; set; }
             public string ExecOnEntry { get; set; }
diff --git a/AquaMai/UX/ExtendTimer.cs b/AquaMai/UX/ExtendTimer.cs
new file mode 100644
index 00000000..2645c459
--- /dev/null
+++ b/AquaMai/UX/ExtendTimer.cs
@@ -0,0 +1,14 @@
+using HarmonyLib;
+
+namespace AquaMai.UX
+{
+    public class ExtendTimer
+    {
+        [HarmonyPrefix]
+        [HarmonyPatch(typeof(TimerController), "PrepareTimer")]
+        public static void PrePrepareTimer(ref int second)
+        {
+            second = 200;
+        }
+    }
+}
\ No newline at end of file