diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4c56475c..dce4ba40 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -190,6 +190,8 @@ set(SOURCES
 	sources/Component/Color/ColorComponent.cpp
 	sources/Component/Stat/StatComponent.cpp
 	sources/Component/Stat/StatComponent.hpp
+	sources/Component/Shaders/Items/AlphaCtxShaderComponent.cpp
+	sources/Component/Shaders/Items/AlphaCtxShaderComponent.hpp
 	sources/Component/Speed/SpeedComponent.cpp
 	sources/Component/Speed/SpeedComponent.hpp
 	)
diff --git a/assets/shaders/explosion.vs b/assets/shaders/explosion.vs
index 26dd04b1..9e1e1fde 100644
--- a/assets/shaders/explosion.vs
+++ b/assets/shaders/explosion.vs
@@ -104,7 +104,7 @@ varying vec3 fragNormal;
 
 void main() {
     // Send vertex attributes to fragment shader
-    fragPosition = vertexPosition + vertexPosition * vec3(cnoise(vec3(vertexNormal + vec3(frame))) * 0.5);
+    fragPosition = vertexPosition + vertexPosition * vec3(cnoise(vec3(vertexNormal + center + vec3(frame))) * 0.5);
     fragColor = vertexColor;
     fragNormal = vertexNormal;
     fragTexCoord = vertexTexCoord;
diff --git a/lib/Ray/sources/Shaders/Shaders.cpp b/lib/Ray/sources/Shaders/Shaders.cpp
index 0def3c96..811fe34a 100644
--- a/lib/Ray/sources/Shaders/Shaders.cpp
+++ b/lib/Ray/sources/Shaders/Shaders.cpp
@@ -6,6 +6,7 @@
 
 #include <utility>
 #include "Exceptions/RayError.hpp"
+#include "Vector/Vector3.hpp"
 
 namespace RAY
 {
@@ -38,6 +39,7 @@ namespace RAY
 		SetShaderValue(*this->_rayLibShader, this->_shaderIndexVars[varName], &value, SHADER_UNIFORM_FLOAT);
 	}
 
+
 	void Shader::setShaderUniformVar(const std::string &varName, int value)
 	{
 		if (this->_shaderIndexVars.find(varName) == this->_shaderIndexVars.end()) {
@@ -60,4 +62,18 @@ namespace RAY
 	{
 		EndShaderMode();
 	}
+
+	void Shader::setShaderUniformVar(const std::string &varName, const RAY::Vector3 &vector)
+	{
+		if (this->_shaderIndexVars.find(varName) == this->_shaderIndexVars.end()) {
+			int varShaderIndex = GetShaderLocation(*this->_rayLibShader, varName.c_str());
+
+			if (varShaderIndex < 0) {
+				throw Exception::WrongInputError("The loaded shader doesn't have a variable called: " + varName);
+			}
+			this->_shaderIndexVars[varName] = varShaderIndex;
+		}
+		SetShaderValue(*this->_rayLibShader, this->_shaderIndexVars[varName], &vector, SHADER_UNIFORM_VEC3);
+	}
+
 }
\ No newline at end of file
diff --git a/lib/Ray/sources/Shaders/Shaders.hpp b/lib/Ray/sources/Shaders/Shaders.hpp
index 20231ea7..a4616670 100644
--- a/lib/Ray/sources/Shaders/Shaders.hpp
+++ b/lib/Ray/sources/Shaders/Shaders.hpp
@@ -9,6 +9,7 @@
 #include <map>
 #include <raylib.h>
 #include "Utils/Cache.hpp"
+#include "Vector/Vector3.hpp"
 
 namespace RAY
 {
@@ -46,6 +47,8 @@ namespace RAY
 		//! @note Throw if the var is not found
 		void setShaderUniformVar(const std::string &varName, int value);
 
+		void setShaderUniformVar(const std::string &varName, const RAY::Vector3 &vector);
+
 		void setLocation(::ShaderLocationIndex, const std::string &name);
 
 		//! @brief ctor if no vertexfile in needed set it to nullptr
diff --git a/sources/Component/Shaders/Items/AlphaCtxShaderComponent.cpp b/sources/Component/Shaders/Items/AlphaCtxShaderComponent.cpp
new file mode 100644
index 00000000..49634922
--- /dev/null
+++ b/sources/Component/Shaders/Items/AlphaCtxShaderComponent.cpp
@@ -0,0 +1,20 @@
+//
+// Created by cbihan on 18/06/2021.
+//
+
+#include "AlphaCtxShaderComponent.hpp"
+
+
+namespace BBM
+{
+
+	AlphaVarShaderComponent::AlphaVarShaderComponent(WAL::Entity &entity) :
+		WAL::Component(entity)
+	{
+	}
+
+	WAL::Component *AlphaVarShaderComponent::clone(WAL::Entity &entity) const
+	{
+		return new AlphaVarShaderComponent(this->_entity);
+	}
+}
\ No newline at end of file
diff --git a/sources/Component/Shaders/Items/AlphaCtxShaderComponent.hpp b/sources/Component/Shaders/Items/AlphaCtxShaderComponent.hpp
new file mode 100644
index 00000000..5408d091
--- /dev/null
+++ b/sources/Component/Shaders/Items/AlphaCtxShaderComponent.hpp
@@ -0,0 +1,51 @@
+//
+// Created by cbihan on 18/06/2021.
+//
+
+#pragma once
+
+#include <Component/Component.hpp>
+#include <chrono>
+
+using namespace std::chrono_literals;
+
+namespace BBM
+{
+	class AlphaVarShaderComponent : public WAL::Component
+	{
+	public:
+		//! @brief Transparency
+		float alpha = 1;
+
+		//! @brief minimum transparency
+		float minAlpha = 0.2;
+		//! @brief maximum transparency
+		float maxAlpha = 1;
+		//! @brief inital step value
+		float initalStepValue = 0.04;
+		//! @brief how fast the alpha will vary
+		float step = 0.04;
+		//! @brief if the alpha should increase or decrease
+		float balance = -1;
+
+		//! @brief The clock to use
+		std::chrono::nanoseconds clock = 0ns;
+
+
+		//! @inherit
+		WAL::Component *clone(WAL::Entity &entity) const override;
+
+		//! @brief ctor
+		explicit AlphaVarShaderComponent(WAL::Entity &entity);
+
+		//! @brief Default copy ctor
+		AlphaVarShaderComponent(const AlphaVarShaderComponent &) = default;
+
+		//! @brief Default dtor
+		~AlphaVarShaderComponent() override = default;
+
+		//! @brief Default assignment operator
+		AlphaVarShaderComponent &operator=(const AlphaVarShaderComponent &) = delete;
+	};
+
+}
\ No newline at end of file
diff --git a/sources/Items/Bonus.cpp b/sources/Items/Bonus.cpp
index ff7828be..c2926ab6 100644
--- a/sources/Items/Bonus.cpp
+++ b/sources/Items/Bonus.cpp
@@ -59,6 +59,7 @@ namespace BBM {
 		if (!playerBonus)
 			return;
 		playerBonus->nextNoClipRate = playerBonus->noClipBonusRate;
+
 		playerBonus->isNoClipOn = true;
 		const_cast<WAL::Entity &>(bonus).scheduleDeletion();
 	}
diff --git a/sources/Runner/GameScene.cpp b/sources/Runner/GameScene.cpp
index 9bc3c632..489be7ee 100644
--- a/sources/Runner/GameScene.cpp
+++ b/sources/Runner/GameScene.cpp
@@ -19,9 +19,11 @@
 #include "Component/BombHolder/BombHolderComponent.hpp"
 #include "Component/Tag/TagComponent.hpp"
 #include "Component/Renderer/Drawable3DComponent.hpp"
+#include "Component/Shaders/Items/AlphaCtxShaderComponent.hpp"
 #include "Component/Speed/SpeedComponent.hpp"
 #include "Component/Renderer/Drawable2DComponent.hpp"
 #include <Drawables/Image.hpp>
+#include "Component/Shaders/ShaderComponent.hpp"
 #include "Drawables/Texture.hpp"
 #include "Component/Gravity/GravityComponent.hpp"
 #include "Component/BumperTimer/BumperTimerComponent.hpp"
@@ -70,6 +72,44 @@ namespace BBM
 			.addComponent<AnimationsComponent>("assets/player/player.iqm", 3)
 			.addComponent<CollisionComponent>(BBM::Vector3f{0.25, 0, 0.25}, BBM::Vector3f{.75, 2, .75})
 			.addComponent<MovableComponent>()
+			.addComponent<AlphaVarShaderComponent>()
+			.addComponent<ShaderComponentModel>("assets/shaders/alpha.fs", "", [](WAL::Entity &myEntity, WAL::Wal &wal, std::chrono::nanoseconds dtime) {
+				auto &ctx = myEntity.getComponent<AlphaVarShaderComponent>();
+
+				ctx.clock += dtime;
+				if (duration_cast<std::chrono::milliseconds>(ctx.clock).count() <= 10)
+					return;
+				ctx.clock = 0ns;
+				auto &bonus = myEntity.getComponent<PlayerBonusComponent>();
+				auto &shader = myEntity.getComponent<ShaderComponentModel>();
+
+				if (!bonus.isNoClipOn) {
+					ctx.alpha = ctx.maxAlpha;
+					shader.shader.setShaderUniformVar("alpha", ctx.alpha);
+					return;
+				}
+
+				auto nbMilliSec = duration_cast<std::chrono::milliseconds>(bonus.nextNoClipRate).count();
+
+				if (nbMilliSec > 1500) {
+					ctx.step = ctx.initalStepValue;
+				} else if (nbMilliSec > 1000) {
+					ctx.step = 0.15;
+				} else if (nbMilliSec > 200) {
+					ctx.step = 0.30;
+				} else {
+					ctx.step = 0.5;
+				}
+				ctx.alpha += static_cast<float>(ctx.step * ctx.balance);
+
+				if (ctx.alpha <= ctx.minAlpha) {
+					ctx.balance = 1;
+				}
+				if (ctx.alpha >= ctx.maxAlpha) {
+					ctx.balance = -1;
+				}
+				shader.shader.setShaderUniformVar("alpha", ctx.alpha);
+			}, true)
 			.addComponent<SoundComponent>(soundPath)
 			.addComponent<MusicComponent>("assets/musics/music_battle.ogg")
 			.addComponent<BombHolderComponent>()
diff --git a/sources/System/BombHolder/BombHolderSystem.cpp b/sources/System/BombHolder/BombHolderSystem.cpp
index f2a2b398..9474e2a5 100644
--- a/sources/System/BombHolder/BombHolderSystem.cpp
+++ b/sources/System/BombHolder/BombHolderSystem.cpp
@@ -53,6 +53,7 @@ namespace BBM
 			.addComponent<ShaderComponentModel>("assets/shaders/explosion.fs", "assets/shaders/explosion.vs", [](WAL::Entity &entity, WAL::Wal &, std::chrono::nanoseconds dtime) {
 				auto &ctx = entity.getComponent<BombExplosionShaderComponent>();
 				auto &shader = entity.getComponent<ShaderComponentModel>();
+				auto &pos = entity.getComponent<PositionComponent>();
 
 				ctx.clock += dtime;
 				if (duration_cast<std::chrono::milliseconds>(ctx.clock).count() <= 10)
@@ -69,7 +70,8 @@ namespace BBM
 				shader.shader.setShaderUniformVar("frame", ctx.frameCounter);
 				shader.shader.setShaderUniformVar("alpha", ctx.alpha);
 				shader.shader.setShaderUniformVar("radius", ctx.explosionRadius);
-			})
+				shader.shader.setShaderUniformVar("center", pos.position);
+			}, true)
 			.addComponent<TimerComponent>(500ms, [](WAL::Entity &explosion, WAL::Wal &) {
 				explosion.scheduleDeletion();
 			})