diff --git a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/LevelSettings.kt b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/LevelSettings.kt
index 2239045..e56b232 100644
--- a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/LevelSettings.kt
+++ b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/LevelSettings.kt
@@ -16,7 +16,7 @@ import kotlin.random.Random
 @Serializable
 public class LevelSettings {
     /**
-     * The version of the level. Currently, it is set to [66][CURRENT_LEVEL_VERSION].
+     * The version of the level. Currently, it is set to [67][CURRENT_LEVEL_VERSION].
      *
      * This library currently does not support levels with other versions.
      * If you want to use levels with other versions, please use the level editor to convert them to a supported version.
@@ -197,7 +197,7 @@ public class LevelSettings {
         /**
          * The current level version the level editor is using.
          */
-        public const val CURRENT_LEVEL_VERSION: Int = 66
+        public const val CURRENT_LEVEL_VERSION: Int = 67
     }
 }
 
diff --git a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/Mods.kt b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/Mods.kt
index 00322e6..74c3f09 100644
--- a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/Mods.kt
+++ b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/settings/Mods.kt
@@ -42,4 +42,10 @@ public object Mods {
      * If the player skips the level, the level immediately ends and the player is given an S rank.
      */
     public const val SKIPPABLE: String = "skippable"
+
+    /**
+     * Uses old vfx easing for [SetVFXPresetEvent][cn.rdlevel.rdkt.core.events.SetVFXPresetEvent].
+     * For most presets that has intensity and easing, when enabling the preset with this mod, the easing will start from 100% intensity instead of 0%.
+     */
+    public const val OLD_VFX_EASING: String = "oldVFXEasing"
 }
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