diff --git a/source/glest_game/graphics/particle_type.h b/source/glest_game/graphics/particle_type.h
index ba6dc421..b8382275 100644
--- a/source/glest_game/graphics/particle_type.h
+++ b/source/glest_game/graphics/particle_type.h
@@ -103,6 +103,8 @@ public:
     void setMaxHp(int value) { maxHp=value;}
     void setMinmaxIsPercent(bool value) { minmaxIsPercent=value; }
 
+    string getType() const { return type; };
+
 protected:
 
 };
diff --git a/source/glest_game/graphics/unit_particle_type.cpp b/source/glest_game/graphics/unit_particle_type.cpp
index be10ad89..9ff4b40e 100644
--- a/source/glest_game/graphics/unit_particle_type.cpp
+++ b/source/glest_game/graphics/unit_particle_type.cpp
@@ -30,6 +30,24 @@ namespace Glest{ namespace Game{
 // =====================================================
 // 	class UnitParticleSystemType
 // =====================================================
+UnitParticleSystemType::UnitParticleSystemType() : ParticleSystemType() {
+	shape = UnitParticleSystem::sLinear;
+	angle = 0;
+	radius = 0;
+	minRadius = 0;
+	emissionRateFade = 0;
+    relative = false;
+    relativeDirection = false;
+    fixed = false;
+    staticParticleCount = 0;
+	isVisibleAtNight = false;
+	isVisibleAtDay = false;
+	radiusBasedStartenergy = false;
+	delay = 0;
+	lifetime = 0;
+	startTime = 0;
+	endTime = 1;
+}
 
 void UnitParticleSystemType::load(const XmlNode *particleSystemNode, const string &dir,
 		RendererInterface *renderer, std::map<string,vector<pair<string, string> > > &loadedFileList,
@@ -217,6 +235,9 @@ const void UnitParticleSystemType::setValues(UnitParticleSystem *ups){
 		direction.z= 0.0f;
 		ups->setDirection(direction);
 	}
+
+	ups->setStartTime(startTime);
+	ups->setEndTime(endTime);
 }
 
 void UnitParticleSystemType::load(const XmlNode *particleFileNode, const string &dir, const string &path,
diff --git a/source/glest_game/graphics/unit_particle_type.h b/source/glest_game/graphics/unit_particle_type.h
index a90ae6dc..628e792e 100644
--- a/source/glest_game/graphics/unit_particle_type.h
+++ b/source/glest_game/graphics/unit_particle_type.h
@@ -61,14 +61,24 @@ protected:
 	bool radiusBasedStartenergy;
 	int delay;
 	int lifetime;
+	float startTime;
+	float endTime;
 
 public:
+	UnitParticleSystemType();
+
 	void load(const XmlNode *particleSystemNode, const string &dir,
 			RendererInterface *newTexture, std::map<string,vector<pair<string, string> > > &loadedFileList,
 			string parentLoader, string techtreePath);
 	void load(const XmlNode *particleFileNode, const string &dir, const string &path, RendererInterface *newTexture,
 			std::map<string,vector<pair<string, string> > > &loadedFileList,string parentLoader,
 			string techtreePath);
+
+	void setStartTime(float startTime) { this->startTime = startTime; }
+	float getStartTime() const { return this->startTime; }
+	void setEndTime(float endTime) { this->endTime = endTime; }
+	float getEndTime() const { return this->endTime; }
+
 	const void setValues (UnitParticleSystem *uts);
 	bool hasTexture() const { return(texture != NULL); }
 };
diff --git a/source/glest_game/type_instances/unit.cpp b/source/glest_game/type_instances/unit.cpp
index a83bf8ee..f38996e6 100644
--- a/source/glest_game/type_instances/unit.cpp
+++ b/source/glest_game/type_instances/unit.cpp
@@ -382,6 +382,7 @@ Unit::~Unit() {
 	}
 
 	// fade(and by this remove) all unit particle systems
+	queuedUnitParticleSystemTypes.clear();
 	while(unitParticleSystems.empty() == false) {
 		unitParticleSystems.back()->fade();
 		unitParticleSystems.pop_back();
@@ -753,10 +754,12 @@ void Unit::setCurrSkill(const SkillType *currSkill) {
 		throw runtime_error(szBuf);
 	}
 
-	if(currSkill->getClass() != this->currSkill->getClass()) {
+	if(currSkill->getClass() != this->currSkill->getClass() ||
+			currSkill->getName() != this->currSkill->getName()) {
 		animProgress= 0;
 		lastAnimProgress= 0;
 
+		queuedUnitParticleSystemTypes.clear();
 		while(unitParticleSystems.empty() == false) {
 			unitParticleSystems.back()->fade();
 			unitParticleSystems.pop_back();
@@ -764,13 +767,24 @@ void Unit::setCurrSkill(const SkillType *currSkill) {
 	}
 	if(showUnitParticles && (currSkill->unitParticleSystemTypes.empty() == false) &&
 		(unitParticleSystems.empty() == true) ) {
+		//printf("START - particle system type\n");
+
 		for(UnitParticleSystemTypes::const_iterator it= currSkill->unitParticleSystemTypes.begin(); it != currSkill->unitParticleSystemTypes.end(); ++it) {
-			UnitParticleSystem *ups = new UnitParticleSystem(200);
-			(*it)->setValues(ups);
-			ups->setPos(getCurrVector());
-			ups->setFactionColor(getFaction()->getTexture()->getPixmapConst()->getPixel3f(0,0));
-			unitParticleSystems.push_back(ups);
-			Renderer::getInstance().manageParticleSystem(ups, rsGame);
+			if((*it)->getStartTime() == 0.0) {
+				//printf("Adding NON-queued particle system type [%s] [%f] [%f]\n",(*it)->getType().c_str(),(*it)->getStartTime(),(*it)->getEndTime());
+
+				UnitParticleSystem *ups = new UnitParticleSystem(200);
+				(*it)->setValues(ups);
+				ups->setPos(getCurrVector());
+				ups->setFactionColor(getFaction()->getTexture()->getPixmapConst()->getPixel3f(0,0));
+				unitParticleSystems.push_back(ups);
+				Renderer::getInstance().manageParticleSystem(ups, rsGame);
+			}
+			else {
+				//printf("Adding queued particle system type [%s] [%f] [%f]\n",(*it)->getType().c_str(),(*it)->getStartTime(),(*it)->getEndTime());
+
+				queuedUnitParticleSystemTypes.push_back(*it);
+			}
 		}
 	}
 	progress2= 0;
@@ -1398,6 +1412,50 @@ bool Unit::needToUpdate() {
 	return return_value;
 }
 
+void Unit::updateTimedParticles() {
+	//!!!
+	// Start new particle systems based on start time
+	for(int i = queuedUnitParticleSystemTypes.size() - 1; i >= 0; i--) {
+		UnitParticleSystemType *pst = queuedUnitParticleSystemTypes[i];
+		if(pst != NULL) {
+			if(truncateDecimal<float>(pst->getStartTime()) <= truncateDecimal<float>(animProgress)) {
+				//printf("STARTING queued particle system type [%s] [%f] [%f] [%f] [%f]\n",pst->getType().c_str(),truncateDecimal<float>(pst->getStartTime()),truncateDecimal<float>(pst->getEndTime()),truncateDecimal<float>(animProgress),truncateDecimal<float>(lastAnimProgress));
+
+				UnitParticleSystem *ups = new UnitParticleSystem(200);
+				pst->setValues(ups);
+				ups->setPos(getCurrVector());
+				ups->setFactionColor(getFaction()->getTexture()->getPixmapConst()->getPixel3f(0,0));
+				unitParticleSystems.push_back(ups);
+				Renderer::getInstance().manageParticleSystem(ups, rsGame);
+
+				queuedUnitParticleSystemTypes.erase(queuedUnitParticleSystemTypes.begin() + i);
+			}
+		}
+		else {
+			queuedUnitParticleSystemTypes.erase(queuedUnitParticleSystemTypes.begin() + i);
+		}
+	}
+
+	// End existing systems based on end time
+	for(int i = unitParticleSystems.size() - 1; i >= 0; i--) {
+		UnitParticleSystem *ps = unitParticleSystems[i];
+		if(ps != NULL) {
+			if(truncateDecimal<float>(ps->getStartTime()) != 0.0 || truncateDecimal<float>(ps->getEndTime()) != 1.0) {
+				//printf("Checking for end particle system #%d [%d] [%f] [%f] [%f] [%f]\n",i,ps->shape,truncateDecimal<float>(ps->getStartTime()),truncateDecimal<float>(ps->getEndTime()),truncateDecimal<float>(animProgress),truncateDecimal<float>(lastAnimProgress));
+
+				if(truncateDecimal<float>(animProgress) >= 0.99 ||
+						truncateDecimal<float>(animProgress) >= truncateDecimal<float>(ps->getEndTime())) {
+					//printf("ENDING particle system [%d]\n",ps->shape);
+
+					ps->fade();
+					unitParticleSystems.erase(unitParticleSystems.begin() + i);
+				}
+			}
+		}
+	}
+
+}
+
 bool Unit::update() {
 	assert(progress <= 1.f);
 
diff --git a/source/glest_game/type_instances/unit.h b/source/glest_game/type_instances/unit.h
index d4d6082f..5923923b 100644
--- a/source/glest_game/type_instances/unit.h
+++ b/source/glest_game/type_instances/unit.h
@@ -330,6 +330,8 @@ private:
     Commands commands;
 	Observers observers;
 	vector<UnitParticleSystem*> unitParticleSystems;
+	vector<UnitParticleSystemType*> queuedUnitParticleSystemTypes;
+
 	UnitParticleSystems damageParticleSystems;
 	std::map<int, UnitParticleSystem *> damageParticleSystemsInUse;
 
@@ -579,6 +581,7 @@ public:
 	bool getUsePathfinderExtendedMaxNodes() const { return usePathfinderExtendedMaxNodes; }
 	void setUsePathfinderExtendedMaxNodes(bool value) { usePathfinderExtendedMaxNodes = value; }
 
+	void updateTimedParticles();
 private:
 	float computeHeight(const Vec2i &pos) const;
 	void calculateXZRotation();
diff --git a/source/glest_game/types/skill_type.cpp b/source/glest_game/types/skill_type.cpp
index 208e3d27..54fdd0e0 100644
--- a/source/glest_game/types/skill_type.cpp
+++ b/source/glest_game/types/skill_type.cpp
@@ -226,6 +226,16 @@ void SkillType::load(const XmlNode *sn, const string &dir, const TechTree *tt,
 				UnitParticleSystemType *unitParticleSystemType= new UnitParticleSystemType();
 				unitParticleSystemType->load(particleFileNode, dir, currentPath + path, &Renderer::getInstance(),
 						loadedFileList,parentLoader,tt->getPath());
+
+				if(particleNode->getAttribute("start-time",false) != NULL) {
+					//printf("*NOTE particle system type has start-time [%f]\n",particleNode->getAttribute("start-time")->getFloatValue());
+					unitParticleSystemType->setStartTime(particleNode->getAttribute("start-time")->getFloatValue());
+				}
+				if(particleNode->getAttribute("end-time",false) != NULL) {
+					//printf("*NOTE particle system type has end-time [%f]\n",particleNode->getAttribute("end-time")->getFloatValue());
+					unitParticleSystemType->setEndTime(particleNode->getAttribute("end-time")->getFloatValue());
+				}
+
 				loadedFileList[currentPath + path].push_back(make_pair(parentLoader,particleFileNode->getAttribute("path")->getRestrictedValue()));
 				unitParticleSystemTypes.push_back(unitParticleSystemType);
 			}
diff --git a/source/glest_game/world/unit_updater.cpp b/source/glest_game/world/unit_updater.cpp
index 1625d22b..ad11528f 100644
--- a/source/glest_game/world/unit_updater.cpp
+++ b/source/glest_game/world/unit_updater.cpp
@@ -133,6 +133,10 @@ void UnitUpdater::updateUnit(Unit *unit) {
 
 	if(SystemFlags::getSystemSettingType(SystemFlags::debugPerformance).enabled && chrono.getMillis() > 0) SystemFlags::OutputDebug(SystemFlags::debugPerformance,"In [%s::%s] Line: %d took msecs: %lld [after playsound]\n",__FILE__,__FUNCTION__,__LINE__,chrono.getMillis());
 
+	unit->updateTimedParticles();
+
+	if(SystemFlags::getSystemSettingType(SystemFlags::debugPerformance).enabled && chrono.getMillis() > 0) SystemFlags::OutputDebug(SystemFlags::debugPerformance,"In [%s::%s] Line: %d took msecs: %lld [after playsound]\n",__FILE__,__FUNCTION__,__LINE__,chrono.getMillis());
+
 	//start attack particle system
 	if(unit->getCurrSkill()->getClass() == scAttack) {
 		const AttackSkillType *ast= static_cast<const AttackSkillType*>(unit->getCurrSkill());
diff --git a/source/shared_lib/include/graphics/math_util.h b/source/shared_lib/include/graphics/math_util.h
index cdc563c9..ed89864c 100644
--- a/source/shared_lib/include/graphics/math_util.h
+++ b/source/shared_lib/include/graphics/math_util.h
@@ -12,6 +12,7 @@
 #ifndef _SHARED_GRAPHICS_MATHUTIL_H_
 #define _SHARED_GRAPHICS_MATHUTIL_H_
 
+#include "math_wrapper.h"
 #include "vec.h"
 #include "leak_dumper.h"
 
@@ -266,6 +267,21 @@ inline T radToDeg(T rad){
 	return (rad*360)/(2*pi);
 }
 
+template<typename T>
+inline T truncateDecimal(const T &value, int precision=6) {
+	int iSigned = value >= 0 ? 1: -1;
+
+#ifdef USE_STREFLOP
+	unsigned int uiTemp = (value * streflop::pow((streflop::Simple)10, (streflop::Simple)precision)) * iSigned; //Note I'm using unsigned int so that I can increase the precision of the truncate
+	T result = (((double)uiTemp) / streflop::pow((streflop::Simple)10,(streflop::Simple)precision) * iSigned);
+#else
+	unsigned int uiTemp = (value * pow(10, precision)) * iSigned; //Note I'm using unsigned int so that I can increase the precision of the truncate
+	T result = (((double)uiTemp) / pow(10,precision) * iSigned);
+#endif
+	return result;
+}
+
+
 }}//end namespace
 
 #endif
diff --git a/source/shared_lib/include/graphics/particle.h b/source/shared_lib/include/graphics/particle.h
index 95336539..c2974889 100644
--- a/source/shared_lib/include/graphics/particle.h
+++ b/source/shared_lib/include/graphics/particle.h
@@ -277,6 +277,8 @@ private:
 	Vec3f fixedAddition;
     Vec3f oldPosition;
     bool energyUp;
+	float startTime;
+	float endTime;
     
 public:
 	enum Shape{
@@ -315,6 +317,11 @@ public:
 	virtual void fade();
 	virtual void render(ParticleRenderer *pr, ModelRenderer *mr);
 
+	virtual void setStartTime(float startTime) { this->startTime = startTime; }
+	virtual float getStartTime() const { return this->startTime; }
+	virtual void setEndTime(float endTime) { this->endTime = endTime; }
+	virtual float getEndTime() const { return this->endTime; }
+
 	//set params
 	void setRadius(float radius)					{this->radius= radius;}
 	void setMinRadius(float minRadius)				{this->minRadius= minRadius;}
diff --git a/source/shared_lib/sources/graphics/particle.cpp b/source/shared_lib/sources/graphics/particle.cpp
index a12f27a5..8620fb62 100644
--- a/source/shared_lib/sources/graphics/particle.cpp
+++ b/source/shared_lib/sources/graphics/particle.cpp
@@ -553,6 +553,9 @@ UnitParticleSystem::UnitParticleSystem(int particleCount):
 	
 	delay = 0; // none
 	lifetime = -1; // forever
+
+	startTime = 0;
+	endTime = 1;
 }
 
 UnitParticleSystem::~UnitParticleSystem(){