Index: binaries/data/mods/public/gui/common/gamedescription.js
===================================================================
--- binaries/data/mods/public/gui/common/gamedescription.js
+++ binaries/data/mods/public/gui/common/gamedescription.js
@@ -412,6 +412,11 @@
 	});
 
 	titles.push({
+		"label": translate("Capturable buildings"),
+		"value": g_GameAttributes.settings.Capturable
+	});
+
+	titles.push({
 		"label": translate("Revealed Map"),
 		"value": g_GameAttributes.settings.RevealMap
 	});
Index: binaries/data/mods/public/gui/gamesetup/gamesetup.js
===================================================================
--- binaries/data/mods/public/gui/gamesetup/gamesetup.js
+++ binaries/data/mods/public/gui/gamesetup/gamesetup.js
@@ -443,6 +443,7 @@
 			"ceasefire",
 			"lockTeams",
 			"lastManStanding",
+			"capturable",
 			"enableRating"
 		]
 	}
@@ -948,6 +949,18 @@
 				!g_GameAttributes.settings.LockTeams,
 			"initOrder": 1000
 		},
+		"capturable": {
+			"title": () => translate("Capturable"),
+			"tooltip": () => translate("Toogle whether buildings can be captured."),
+			"default": () => true,
+			"defined": () => g_GameAttributes.settings.Capturable !== undefined,
+			"get": () => g_GameAttributes.settings.Capturable,
+			"set": checked => {
+				g_GameAttributes.settings.Capturable = checked;
+			},
+			"enabled":() => true,
+			"initOrder": 1000
+		},
 		"enableCheats": {
 			"title": () => translate("Cheats"),
 			"tooltip": () => translate("Toggle the usability of cheats."),
Index: binaries/data/mods/public/simulation/ai/petra/defenseManager.js
===================================================================
--- binaries/data/mods/public/simulation/ai/petra/defenseManager.js
+++ binaries/data/mods/public/simulation/ai/petra/defenseManager.js
@@ -220,6 +220,8 @@
 				let capture = ent.capturePoints();
 				if (capture === undefined)
 					continue;
+				if (!capture.length)
+					continue;
 				let lost = 0;
 				for (let j = 0; j < capture.length; ++j)
 					if (gameState.isPlayerEnemy(j))
Index: binaries/data/mods/public/simulation/components/Capturable.js
===================================================================
--- binaries/data/mods/public/simulation/components/Capturable.js
+++ binaries/data/mods/public/simulation/components/Capturable.js
@@ -25,11 +25,19 @@
  */
 Capturable.prototype.GetCapturePoints = function()
 {
+	let cmpCaptureManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_CaptureManager);
+	if (cmpCaptureManager && !cmpCaptureManager.IsCapturingAllowed(this.entity))
+		return 0;
+
 	return this.cp;
 };
 
 Capturable.prototype.GetMaxCapturePoints = function()
 {
+	let cmpCaptureManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_CaptureManager);
+	if (cmpCaptureManager && !cmpCaptureManager.IsCapturingAllowed(this.entity))
+		return 0;
+
 	return this.maxCp;
 };
 
@@ -55,6 +63,10 @@
  */
 Capturable.prototype.Reduce = function(amount, playerID)
 {
+	let cmpCaptureManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_CaptureManager);
+	if (cmpCaptureManager && !cmpCaptureManager.IsCapturingAllowed(this.entity))
+		return 0;
+
 	if (amount <= 0)
 		return 0;
 
@@ -115,6 +127,10 @@
  */
 Capturable.prototype.CanCapture = function(playerID)
 {
+	let cmpCaptureManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_CaptureManager);
+	if (cmpCaptureManager && !cmpCaptureManager.IsCapturingAllowed(this.entity))
+		return false;
+
 	var cmpPlayerSource = QueryPlayerIDInterface(playerID);
 
 	if (!cmpPlayerSource)
Index: binaries/data/mods/public/simulation/components/CaptureManager.js
===================================================================
--- /dev/null
+++ binaries/data/mods/public/simulation/components/CaptureManager.js
@@ -0,0 +1,46 @@
+function CaptureManager() {}
+
+CaptureManager.prototype.Init = function()
+{
+	this.allowedCapturing = true;
+	this.wonderVictory = false;
+	this.relicVictory = false;
+}
+
+CaptureManager.prototype.IsCapturingAllowed = function(entity)
+{
+	if (!this.relicVictory && !this.wonderVictory)
+		return this.allowedCapturing;
+
+	if (!entity)
+		return this.allowedCapturing;
+
+	if (this.relicVictory) {
+		let cmpIdentity = Engine.QueryInterface(entity, IID_Identity);
+		if (cmpIdentity && cmpIdentity.HasClass("Relic"))
+			return true;
+	}
+	if (this.wonderVictory) {
+		let cmpWonder = Engine.QueryInterface(entity, IID_Wonder);
+		if (cmpWonder)
+			return true;
+	}
+	return this.allowedCapturing;
+}
+
+CaptureManager.prototype.SetCapturableGame = function(allowedCapturing)
+{
+	this.allowedCapturing = allowedCapturing;
+}
+
+CaptureManager.prototype.SetWonderVictory = function(wonderVictory)
+{
+	this.wonderVictory = wonderVictory;
+}
+
+CaptureManager.prototype.SetRelicVictory = function(relicVictory)
+{
+	this.relicVictory = relicVictory;
+}
+
+Engine.RegisterSystemComponentType(IID_CaptureManager, "CaptureManager", CaptureManager);
Index: binaries/data/mods/public/simulation/components/StatusBars.js
===================================================================
--- binaries/data/mods/public/simulation/components/StatusBars.js
+++ binaries/data/mods/public/simulation/components/StatusBars.js
@@ -202,6 +202,10 @@
 	if (!cmpCapturable)
 		return 0;
 
+	let cmpCaptureManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_CaptureManager);
+	if (cmpCaptureManager && !cmpCaptureManager.IsCapturingAllowed(this.entity))
+		return 0;
+
 	let cmpOwnership = QueryMiragedInterface(this.entity, IID_Ownership);
 	if (!cmpOwnership)
 		return 0;
Index: binaries/data/mods/public/simulation/components/TerritoryDecay.js
===================================================================
--- binaries/data/mods/public/simulation/components/TerritoryDecay.js
+++ binaries/data/mods/public/simulation/components/TerritoryDecay.js
@@ -93,6 +93,21 @@
 		return;
 	this.decaying = decaying;
 	Engine.PostMessage(this.entity, MT_TerritoryDecayChanged, { "entity": this.entity, "to": decaying, "rate": this.GetDecayRate() });
+
+	let cmpCaptureManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_CaptureManager);
+	if (!cmpCaptureManager || cmpCaptureManager.IsCapturingAllowed(this.entity))
+		return;
+
+	if (decaying) {
+		// Start decaying
+		let cmpTimer = Engine.QueryInterface(SYSTEM_ENTITY, IID_Timer);
+		this.timer = cmpTimer.SetInterval(this.entity, IID_TerritoryDecay, "Decay", 1000, 1000, {"rate": this.GetDecayRate()});
+	} else {
+		// Stop decaying
+		let cmpTimer = Engine.QueryInterface(SYSTEM_ENTITY, IID_Timer);
+		cmpTimer.CancelTimer(this.timer);
+		this.timer = undefined;
+	}
 };
 
 TerritoryDecay.prototype.UpdateOwner = function()
@@ -152,5 +167,14 @@
 {
 	return this.territoryOwnership;
 };
+TerritoryDecay.prototype.Decay = function(msg)
+{
+	let cmpHealth = Engine.QueryInterface(this.entity, IID_Health);
+	if (!cmpHealth)
+		return; // error
+
+	let decayRate = msg.rate;
 
+	cmpHealth.Reduce(Math.round(decayRate));
+};
 Engine.RegisterComponentType(IID_TerritoryDecay, "TerritoryDecay", TerritoryDecay);
Index: binaries/data/mods/public/simulation/components/interfaces/CaptureManager.js
===================================================================
--- /dev/null
+++ binaries/data/mods/public/simulation/components/interfaces/CaptureManager.js
@@ -0,0 +1 @@
+Engine.RegisterInterface("CaptureManager");
Index: binaries/data/mods/public/simulation/helpers/Commands.js
===================================================================
--- binaries/data/mods/public/simulation/helpers/Commands.js
+++ binaries/data/mods/public/simulation/helpers/Commands.js
@@ -405,7 +405,7 @@
 					continue;
 
 				let cmpCapturable = QueryMiragedInterface(ent, IID_Capturable);
-				if (cmpCapturable &&
+				if (cmpCapturable && cmpCapturable.GetCapturePoints() &&
 				    cmpCapturable.GetCapturePoints()[player] < cmpCapturable.GetMaxCapturePoints() / 2)
 					continue;
 
Index: binaries/data/mods/public/simulation/helpers/Setup.js
===================================================================
--- binaries/data/mods/public/simulation/helpers/Setup.js
+++ binaries/data/mods/public/simulation/helpers/Setup.js
@@ -64,6 +64,11 @@
 	if (settings.LockTeams && settings.LastManStanding)
 		warn("Last man standing is only available in games with unlocked teams!");
 
+	let cmpCaptureManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_CaptureManager);
+	cmpCaptureManager.SetCapturableGame(settings.Capturable);
+	cmpCaptureManager.SetWonderVictory(gameSettings.victoryConditions.indexOf("wonder") != -1);
+	cmpCaptureManager.SetRelicVictory(gameSettings.victoryConditions.indexOf("capture_the_relic") != -1);
+
 	if (settings.Garrison)
 		for (let holder in settings.Garrison)
 		{