diff --git a/app/Http/Controllers/Admin/GameConfigController.php b/app/Http/Controllers/Admin/GameConfigController.php
index 43d92ff..dd5c62a 100644
--- a/app/Http/Controllers/Admin/GameConfigController.php
+++ b/app/Http/Controllers/Admin/GameConfigController.php
@@ -66,6 +66,23 @@ class GameConfigController extends Controller
         $current = $gameConfig->params ?? [];
         $updated = array_merge($current, $request->input('params'));
 
+        if ($gameConfig->game_key === 'mystery_box') {
+            $legacyMap = [
+                'min_reward' => 'normal_reward_min',
+                'max_reward' => 'normal_reward_max',
+                'rare_min_reward' => 'rare_reward_min',
+                'rare_max_reward' => 'rare_reward_max',
+            ];
+
+            foreach ($legacyMap as $legacyKey => $newKey) {
+                if (! array_key_exists($newKey, $updated) && array_key_exists($legacyKey, $updated)) {
+                    $updated[$newKey] = $updated[$legacyKey];
+                }
+
+                unset($updated[$legacyKey]);
+            }
+        }
+
         $gameConfig->update(['params' => $updated]);
         $gameConfig->clearCache();
 
diff --git a/resources/views/admin/game-configs/index.blade.php b/resources/views/admin/game-configs/index.blade.php
index 40bdd86..0067ca1 100644
--- a/resources/views/admin/game-configs/index.blade.php
+++ b/resources/views/admin/game-configs/index.blade.php
@@ -93,12 +93,31 @@
                             @php
                                 $params = $game->params ?? [];
                                 $labels = gameParamLabels($game->game_key);
+                                $hiddenLegacyKeys = $game->game_key === 'mystery_box'
+                                    ? ['min_reward', 'max_reward', 'rare_min_reward', 'rare_max_reward']
+                                    : [];
                                 $paramKeys = array_values(array_unique(array_merge(array_keys($labels), array_keys($params))));
+                                $paramKeys = array_values(array_filter($paramKeys, fn ($key) => ! in_array($key, $hiddenLegacyKeys, true)));
                             @endphp
 
                             <div class="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-4">
                                 @foreach ($paramKeys as $paramKey)
-                                    @php $paramValue = $params[$paramKey] ?? ($labels[$paramKey]['default'] ?? '') @endphp
+                                    @php
+                                        $paramValue = $params[$paramKey] ?? ($labels[$paramKey]['default'] ?? '');
+
+                                        if ($game->game_key === 'mystery_box') {
+                                            $legacyFallbackMap = [
+                                                'normal_reward_min' => 'min_reward',
+                                                'normal_reward_max' => 'max_reward',
+                                                'rare_reward_min' => 'rare_min_reward',
+                                                'rare_reward_max' => 'rare_max_reward',
+                                            ];
+
+                                            if (($paramValue === '' || $paramValue === null) && isset($legacyFallbackMap[$paramKey])) {
+                                                $paramValue = $params[$legacyFallbackMap[$paramKey]] ?? $paramValue;
+                                            }
+                                        }
+                                    @endphp
                                     @php $meta = $labels[$paramKey] ?? ['label' => $paramKey, 'type' => 'number', 'unit' => ''] @endphp
                                     <div>
                                         <label class="block text-xs font-bold text-gray-600 mb-1">