diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_1.0_Ertheia/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_1.0_Ertheia/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index 880c7382c9..c1ed67bf06 100644
--- a/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_1.0_Ertheia/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -220,8 +220,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -235,8 +239,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_2.5_Underground/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_2.5_Underground/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index 880c7382c9..c1ed67bf06 100644
--- a/L2J_Mobius_2.5_Underground/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_2.5_Underground/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -220,8 +220,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -235,8 +239,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_3.0_Helios/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_3.0_Helios/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index 880c7382c9..c1ed67bf06 100644
--- a/L2J_Mobius_3.0_Helios/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_3.0_Helios/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -220,8 +220,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -235,8 +239,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index de7cc1efbf..714062dc79 100644
--- a/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_4.0_GrandCrusade/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -221,8 +221,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -236,8 +240,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_5.0_Salvation/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_5.0_Salvation/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index de7cc1efbf..714062dc79 100644
--- a/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_5.0_Salvation/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -221,8 +221,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -236,8 +240,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_5.5_EtinasFate/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_5.5_EtinasFate/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index de7cc1efbf..714062dc79 100644
--- a/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_5.5_EtinasFate/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -221,8 +221,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -236,8 +240,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_6.0_Fafurion/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_6.0_Fafurion/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index de7cc1efbf..714062dc79 100644
--- a/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_6.0_Fafurion/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -221,8 +221,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -236,8 +240,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/instances/AltarOfShilen.xml b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/instances/AltarOfShilen.xml
index daddf3a8a6..bb1010b66b 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/instances/AltarOfShilen.xml
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/instances/AltarOfShilen.xml
@@ -255,7 +255,7 @@
 			<!-- 2st floor boss -->
 			<npc id="25858" x="178154" y="15149" z="-10744" heading="15626" /> <!-- Corrupted High Priest -->
 		</group>
-		<group name="thrid_floor" spawnByDefault="false">
+		<group name="third_floor" spawnByDefault="false">
 			<npc id="8561" x="181547" y="14035" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182615" y="14779" z="-12992" heading="0" /> <!-- invisible1 -->
 			<npc id="8561" x="182122" y="15470" z="-12992" heading="0" /> <!-- invisible1 -->
diff --git a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
index de7cc1efbf..714062dc79 100644
--- a/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
+++ b/L2J_Mobius_7.0_PreludeOfWar/dist/game/data/scripts/instances/AltarOfShilen/AltarOfShilen.java
@@ -221,8 +221,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(SECOND_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("second_floor");
 						});
+						if (!world.getParameters().getBoolean("second_floor_spawned", false))
+						{
+							world.setParameter("second_floor_spawned", true);
+							world.spawnGroup("second_floor");
+						}
 					}
 					break;
 				}
@@ -236,8 +240,12 @@ public class AltarOfShilen extends AbstractInstance
 							{
 								p.teleToLocation(THIRD_FLOOR, world.getTemplateId());
 							}
-							world.spawnGroup("thrid_floor");
 						});
+						if (!world.getParameters().getBoolean("third_floor_spawned", false))
+						{
+							world.setParameter("third_floor_spawned", true);
+							world.spawnGroup("third_floor");
+						}
 					}
 					break;
 				}