Index: ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/GameSettingsLayout.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/GameSettingsLayout.js
+++ ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/GameSettingsLayout.js
@@ -12,6 +12,7 @@
 			"MapSize",
 			"Landscape",
 			"Biome",
+			"SeaLevelRiseTime",
 			"Daytime",
 			"TriggerDifficulty",
 			"Nomad",
Index: ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/Single/Sliders/SeaLevelRiseTime.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/Single/Sliders/SeaLevelRiseTime.js
+++ ps/trunk/binaries/data/mods/public/gui/gamesetup/Pages/GameSetupPage/GameSettings/Single/Sliders/SeaLevelRiseTime.js
@@ -0,0 +1,83 @@
+GameSettingControls.SeaLevelRiseTime = class extends GameSettingControlSlider
+{
+	constructor(...args)
+	{
+		super(...args);
+
+		this.values = undefined;
+		this.sprintfValue = {};
+	}
+
+	onMapChange(mapData)
+	{
+		this.values =
+			mapData &&
+			mapData.settings &&
+			mapData.settings.SeaLevelRise || undefined;
+
+		if (this.values)
+		{
+			this.slider.min_value = this.values.Min;
+			this.slider.max_value = this.values.Max;
+		}
+
+		this.setHidden(!this.values);
+		this.setEnabled(g_GameAttributes.mapType != "scenario");
+	}
+
+	onGameAttributesChange()
+	{
+		if (this.values)
+		{
+			if (g_GameAttributes.settings.SeaLevelRiseTime === undefined)
+			{
+				g_GameAttributes.settings.SeaLevelRiseTime = this.values.Default;
+				this.gameSettingsControl.updateGameAttributes();
+			}
+		}
+		else if (g_GameAttributes.settings.SeaLevelRiseTime !== undefined)
+		{
+			delete g_GameAttributes.settings.SeaLevelRiseTime;
+			this.gameSettingsControl.updateGameAttributes();
+		}
+	}
+
+	onGameAttributesBatchChange()
+	{
+		if (!this.values)
+			return;
+
+		let value = Math.round(g_GameAttributes.settings.SeaLevelRiseTime);
+		this.sprintfValue.minutes = value;
+
+		this.setSelectedValue(
+			g_GameAttributes.settings.SeaLevelRiseTime,
+			sprintf(this.SeaLevelRiseTimeCaption(value), this.sprintfValue));
+	}
+
+	onValueChange(value)
+	{
+		g_GameAttributes.settings.SeaLevelRiseTime = value;
+		this.gameSettingsControl.updateGameAttributes();
+		this.gameSettingsControl.setNetworkGameAttributes();
+	}
+
+	onGameAttributesFinalize()
+	{
+		if (this.values)
+			g_GameAttributes.settings.SeaLevelRiseTime = Math.round(g_GameAttributes.settings.SeaLevelRiseTime);
+	}
+};
+
+GameSettingControls.SeaLevelRiseTime.prototype.TitleCaption =
+	translate("Sea Level Rise Time");
+
+GameSettingControls.SeaLevelRiseTime.prototype.Tooltip =
+	translate("Set the time when the water will start to rise.");
+
+GameSettingControls.SeaLevelRiseTime.prototype.SeaLevelRiseTimeCaption =
+	minutes => translatePluralWithContext("sea level rise time", "%(minutes)s minute", "%(minutes)s minutes", minutes);
+
+GameSettingControls.SeaLevelRiseTime.prototype.MinValue = 0;
+
+GameSettingControls.SeaLevelRiseTime.prototype.MaxValue = 60;
Index: ps/trunk/binaries/data/mods/public/maps/random/extinct_volcano.json
===================================================================
--- ps/trunk/binaries/data/mods/public/maps/random/extinct_volcano.json
+++ ps/trunk/binaries/data/mods/public/maps/random/extinct_volcano.json
@@ -9,6 +9,11 @@
 		"Keywords": ["trigger"],
 		"CircularMap" : true,
 		"Preview" : "extinctvolcano.png",
+		"SeaLevelRise": {
+			"Min": 0,
+			"Max": 60,
+			"Default": 25
+		},
 		"TriggerScripts": [
 			"scripts/TriggerHelper.js",
 			"random/extinct_volcano_triggers.js"
Index: ps/trunk/binaries/data/mods/public/maps/random/extinct_volcano_triggers.js
===================================================================
--- ps/trunk/binaries/data/mods/public/maps/random/extinct_volcano_triggers.js
+++ ps/trunk/binaries/data/mods/public/maps/random/extinct_volcano_triggers.js
@@ -9,12 +9,6 @@
 var debugWaterRise = false;
 
 /**
- * Time in minutes when the water level starts to rise.
- * Allow players to build up the economy and military for some time.
- */
-var waterRiseStartTime = [22, 26];
-
-/**
  * Duration in minutes for which the notification will be shown that states that the water will rise soon.
  */
 var waterRiseNotificationDuration = 1;
@@ -188,9 +182,8 @@
 	this.DebugLog("Converted to actors: " + uneval(actorTemplates));
 };
 
-
 {
-	let waterRiseTime = debugWaterRise ? 0 : randFloat(...waterRiseStartTime);
+	let waterRiseTime = debugWaterRise ? 0 : (InitAttributes.settings.SeaLevelRiseTime || 0);
 	let cmpTrigger = Engine.QueryInterface(SYSTEM_ENTITY, IID_Trigger);
 	cmpTrigger.GarrisonWoodenTowers();
 	cmpTrigger.DoAfterDelay((waterRiseTime - waterRiseNotificationDuration) * 60 * 1000, "RaisingWaterNotification", {});