diff --git a/hwe/sammo/GameConstBase.php b/hwe/sammo/GameConstBase.php
index ea528042..1efc3341 100644
--- a/hwe/sammo/GameConstBase.php
+++ b/hwe/sammo/GameConstBase.php
@@ -228,6 +228,16 @@ class GameConstBase
     /** @var ?string */
     public static $scenarioEffect = null;
 
+    public static $defaultInstantAction = [
+        'dieOnPrestart' => true,
+        'buildNationCandidate' => true,
+    ];
+
+    public static $availableInstantAction = [
+        'dieOnPrestart' => true,
+        'buildNationCandidate' => true,
+    ];
+
     public static $allItems = [
         'horse' => [
             'che_명마_01_노기' => 0, 'che_명마_02_조랑' => 0, 'che_명마_03_노새' => 0,
diff --git a/hwe/sammo/Scenario.php b/hwe/sammo/Scenario.php
index d2bc9ddb..2b86cba1 100644
--- a/hwe/sammo/Scenario.php
+++ b/hwe/sammo/Scenario.php
@@ -515,6 +515,11 @@ class Scenario{
             }
         }
 
+        $this->gameConf['availableInstantAction'] = array_merge(
+            GameConstBase::$defaultInstantAction,
+            $this->gameConf['availableInstantAction']??[]
+        );
+
         Util::generatePHPClassFile($path.'/GameConst.php', $this->gameConf, 'GameConstBase', 'sammo');
 
         copy("$mapPath/$mapName.php", $path.'/CityConst.php');