diff --git a/HBC/META.XML b/HBC/META.XML
index 67f449ea..f906083a 100644
--- a/HBC/META.XML
+++ b/HBC/META.XML
@@ -2,8 +2,8 @@
 	<app version="1">
 		<name> USB Loader GX</name>
 		<coder>USB Loader GX Team</coder>
-		<version>3.0 r1188</version>
-		<release_date>201205191249</release_date>
+		<version>3.0 r1189</version>
+		<release_date>201206090828</release_date>
 		<!--   // remove this line to enable arguments
 		<arguments>
 				<arg>--ios=250</arg>
diff --git a/source/GUI/gui_checkbox.cpp b/source/GUI/gui_checkbox.cpp
index 0ded7680..6724f300 100644
--- a/source/GUI/gui_checkbox.cpp
+++ b/source/GUI/gui_checkbox.cpp
@@ -26,15 +26,17 @@
 #define WHITEBOX_RED_SIZE   4
 
 GuiCheckbox::GuiCheckbox(int s)
-	: GuiButton(30, 30), Checked(false)
+	: GuiButton(30, 30), Checked(false), MultiStates(false)
 {
 	style = s;
 	Checksign.SetParent(this);
 	Cross.SetParent(this);
+	Plus.SetParent(this);
 	Blackbox.SetParent(this);
 	Whitebox.SetParent(this);
 	Checksign.SetColor((GXColor) {0, 0, 0, 255});
 	Cross.SetColor((GXColor) {0, 0, 0, 255});
+	Plus.SetColor((GXColor) {0, 0, 0, 255});
 	Blackbox.SetColor((GXColor) {0, 0, 0, 255});
 	Whitebox.SetColor((GXColor) {255, 255, 255, 255});
 
@@ -42,15 +44,17 @@ GuiCheckbox::GuiCheckbox(int s)
 }
 
 GuiCheckbox::GuiCheckbox(int w, int h, int s)
-		: GuiButton(w, h), Checked(false)
+		: GuiButton(w, h), Checked(false), MultiStates(false)
 {
 	style = s;
 	Checksign.SetParent(this);
 	Cross.SetParent(this);
+	Plus.SetParent(this);
 	Blackbox.SetParent(this);
 	Whitebox.SetParent(this);
 	Checksign.SetColor((GXColor) {0, 0, 0, 255});
 	Cross.SetColor((GXColor) {0, 0, 0, 255});
+	Plus.SetColor((GXColor) {0, 0, 0, 255});
 	Blackbox.SetColor((GXColor) {0, 0, 0, 255});
 	Whitebox.SetColor((GXColor) {255, 255, 255, 255});
 
@@ -65,6 +69,8 @@ void GuiCheckbox::SetSize(int w, int h)
 	Checksign.SetPosition(WHITEBOX_RED_SIZE/2, WHITEBOX_RED_SIZE/2);
 	Cross.SetSize(w-WHITEBOX_RED_SIZE, h-WHITEBOX_RED_SIZE);
 	Cross.SetPosition(WHITEBOX_RED_SIZE/2, WHITEBOX_RED_SIZE/2);
+	Plus.SetSize(w-WHITEBOX_RED_SIZE, h-WHITEBOX_RED_SIZE);
+	Plus.SetPosition(WHITEBOX_RED_SIZE/2, WHITEBOX_RED_SIZE/2);
 	Blackbox.SetSize(w, h);
 	Whitebox.SetSize(w-WHITEBOX_RED_SIZE, h-WHITEBOX_RED_SIZE);
 	Whitebox.SetPosition(WHITEBOX_RED_SIZE/2, WHITEBOX_RED_SIZE/2);
@@ -86,7 +92,23 @@ void GuiCheckbox::SetTransparent(bool b)
 void GuiCheckbox::SetState(int s, int c)
 {
 	if(s == STATE_CLICKED)
-		Checked = !Checked;
+	{
+		if(MultiStates)
+		{
+			if(!Checked)
+				Checked = !Checked;
+			else
+				style++;
+				
+			if(style == MAX_CHECKBOX_STYLE)
+			{
+				Checked = !Checked;
+				style = CHECKSIGN;
+			}		
+		}
+		else
+			Checked = !Checked;
+	}
 
 	GuiButton::SetState(s, c);
 }
@@ -96,6 +118,7 @@ void GuiCheckbox::SetAlignment(int h, int v)
 	GuiButton::SetAlignment(h, v);
 	Checksign.SetAlignment(h, v);
 	Cross.SetAlignment(h, v);
+	Plus.SetAlignment(h, v);
 	Blackbox.SetAlignment(h, v);
 	Whitebox.SetAlignment(h, v);
 
@@ -103,24 +126,28 @@ void GuiCheckbox::SetAlignment(int h, int v)
 	{
 		Checksign.SetPosition(-WHITEBOX_RED_SIZE/2, Checksign.GetTopPos());
 		Cross.SetPosition(-WHITEBOX_RED_SIZE/2, Cross.GetTopPos());
+		Plus.SetPosition(-WHITEBOX_RED_SIZE/2, Plus.GetTopPos());
 		Whitebox.SetPosition(-WHITEBOX_RED_SIZE/2, Whitebox.GetTopPos());
 	}
 	else if(h == ALIGN_CENTER)
 	{
 		Checksign.SetPosition(0, Checksign.GetTopPos());
 		Cross.SetPosition(0, Cross.GetTopPos());
+		Plus.SetPosition(0, Plus.GetTopPos());
 		Whitebox.SetPosition(0, Whitebox.GetTopPos());
 	}
 	if(v == ALIGN_BOTTOM)
 	{
 		Checksign.SetPosition(Checksign.GetLeftPos(), -WHITEBOX_RED_SIZE/2);
 		Cross.SetPosition(Cross.GetLeftPos(), -WHITEBOX_RED_SIZE/2);
+		Plus.SetPosition(Plus.GetLeftPos(), -WHITEBOX_RED_SIZE/2);
 		Whitebox.SetPosition(Whitebox.GetLeftPos(), -WHITEBOX_RED_SIZE/2);
 	}
 	else if(v == ALIGN_MIDDLE)
 	{
 		Checksign.SetPosition(Checksign.GetLeftPos(), 0);
 		Cross.SetPosition(Cross.GetLeftPos(), 0);
+		Plus.SetPosition(Plus.GetLeftPos(), 0);
 		Whitebox.SetPosition(Whitebox.GetLeftPos(), 0);
 	}
 }
@@ -134,6 +161,8 @@ void GuiCheckbox::Draw()
 	{
 		if(style == CHECKSIGN)
 			Checksign.Draw();
+		else if (style == PLUS)
+			Plus.Draw();
 		else
 			Cross.Draw();
 	}
diff --git a/source/GUI/gui_checkbox.hpp b/source/GUI/gui_checkbox.hpp
index 196a3829..fc3f1c31 100644
--- a/source/GUI/gui_checkbox.hpp
+++ b/source/GUI/gui_checkbox.hpp
@@ -28,6 +28,7 @@
 #include "GUI/gui_box.hpp"
 #include "GUI/gui_cross.hpp"
 #include "GUI/gui_checksign.hpp"
+#include "GUI/gui_plus.hpp"
 
 class GuiCheckbox : public GuiButton
 {
@@ -39,21 +40,28 @@ class GuiCheckbox : public GuiButton
 		void SetClickSize(int w, int h);
 		void SetAlignment(int h, int v);
 		void SetChecked(bool c) { LOCK(this); Checked = c; }
+		void SetStyle(int st) { LOCK(this); style = st; }
+		void SetMultiStates(bool m) { LOCK(this); MultiStates = m; }
 		bool IsChecked() const { return Checked; }
+		int  GetStyle() { return style; }
 		virtual void SetState(int s, int c = -1);
 		virtual void Draw();
 		enum
 		{
 			CHECKSIGN,
 			CROSS,
+			PLUS,
+			MAX_CHECKBOX_STYLE
 		};
 	protected:
 		GuiChecksign Checksign;
 		GuiCross Cross;
+		GuiPlus Plus;
 		GuiBox Blackbox;
 		GuiBox Whitebox;
 		int style;
 		bool Checked;
+		bool MultiStates;
 
 };
 
diff --git a/source/GUI/gui_checkboxbrowser.cpp b/source/GUI/gui_checkboxbrowser.cpp
index c0d11a39..5e5226fb 100644
--- a/source/GUI/gui_checkboxbrowser.cpp
+++ b/source/GUI/gui_checkboxbrowser.cpp
@@ -110,6 +110,37 @@ bool GuiCheckboxBrowser::AddEntrie(const string &text, bool checked)
 	return true;
 }
 
+bool GuiCheckboxBrowser::AddEntrieMultiStates(const string &text, bool checked, int style)
+{
+	LOCK(this);
+	int currentSize = checkBoxList.size();
+	textLineList.resize(currentSize+1);
+	checkBoxList.resize(currentSize+1);
+
+	checkBoxList[currentSize] = new GuiCheckbox(30, 30);
+	checkBoxList[currentSize]->SetParent(this);
+	checkBoxList[currentSize]->SetChecked(checked);
+	checkBoxList[currentSize]->SetStyle(style);
+	checkBoxList[currentSize]->SetMultiStates(true);
+	checkBoxList[currentSize]->SetAlignment(ALIGN_RIGHT, ALIGN_TOP);
+	checkBoxList[currentSize]->SetTrigger(&trigA);
+	checkBoxList[currentSize]->SetClickSize(width-30-scrollBar.GetWidth(), 30);
+	checkBoxList[currentSize]->Clicked.connect(this, &GuiCheckboxBrowser::OnCheckboxClick);
+
+	textLineList[currentSize] = new GuiText(text.c_str(), 18, thColor("r=0 g=0 b=0 a=255 - checkbox browser text color"));
+	textLineList[currentSize]->SetParent(this);
+	textLineList[currentSize]->SetAlignment(ALIGN_LEFT, ALIGN_TOP);
+	textLineList[currentSize]->SetMaxWidth(maxTextWidth, DOTTED);
+
+	if(textLineDrawn.size() < (u32) maxSize)
+	{
+		textLineDrawn.push_back(textLineList[currentSize]);
+		checkBoxDrawn.push_back(checkBoxList[currentSize]);
+	}
+
+	return true;
+}
+
 void GuiCheckboxBrowser::OnCheckboxClick(GuiButton *sender, int chan, const POINT &pointer)
 {
 	LOCK(this);
diff --git a/source/GUI/gui_checkboxbrowser.hpp b/source/GUI/gui_checkboxbrowser.hpp
index 5a62b72b..abc0bc97 100644
--- a/source/GUI/gui_checkboxbrowser.hpp
+++ b/source/GUI/gui_checkboxbrowser.hpp
@@ -37,6 +37,7 @@ class GuiCheckboxBrowser : public GuiElement, public sigslot::has_slots<>
 		GuiCheckboxBrowser(int w, int h, int maxSize = 7);
 		virtual ~GuiCheckboxBrowser();
 		bool AddEntrie(const string &text, bool checked = false);
+		bool AddEntrieMultiStates(const string &text, bool checked = false, int style = CHECKSIGN);
 		int GetSelected() const { return pageIndex+selectedItem; }
 		bool IsChecked(u32 i) { if(i >= checkBoxList.size()) return false; else return checkBoxList[i]->IsChecked(); }
 		GuiCheckbox *GetCheckbox(u32 i) { if(i >= checkBoxList.size()) return NULL; else return checkBoxList[i]; }
@@ -47,6 +48,13 @@ class GuiCheckboxBrowser : public GuiElement, public sigslot::has_slots<>
 		void Draw();
 		void Update(GuiTrigger *t);
 		sigslot::signal2<GuiCheckbox *, int> checkBoxClicked;
+		enum
+		{
+			CHECKSIGN,
+			CROSS,
+			PLUS,
+			MAX_CHECKBOX_STYLE
+		};
 	private:
 		void onListChange(int SelItem, int SelInd);
 		void OnCheckboxClick(GuiButton *sender, int chan, const POINT &pointer);
diff --git a/source/GUI/gui_plus.cpp b/source/GUI/gui_plus.cpp
new file mode 100644
index 00000000..5ef717a2
--- /dev/null
+++ b/source/GUI/gui_plus.cpp
@@ -0,0 +1,53 @@
+/****************************************************************************
+ * Copyright (C) 2012
+ * by Dimok
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any
+ * damages arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any
+ * purpose, including commercial applications, and to alter it and
+ * redistribute it freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you
+ * must not claim that you wrote the original software. If you use
+ * this software in a product, an acknowledgment in the product
+ * documentation would be appreciated but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and
+ * must not be misrepresented as being the original software.
+ *
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+ ***************************************************************************/
+#include "gui_plus.hpp"
+
+void GuiPlus::Draw()
+{
+	GX_SetTevOp(GX_TEVSTAGE0, GX_PASSCLR);
+	GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
+	GX_SetVtxDesc(GX_VA_CLR0, GX_DIRECT);
+	GX_SetVtxDesc(GX_VA_TEX0, GX_NONE);
+
+	f32 x1 = GetLeft() + width*0.15f;
+	f32 x2 = GetLeft() + width*0.5f;
+	f32 x3 = GetLeft() + width - width*0.15f;
+	f32 y1 = GetTop() + height*0.15f;
+	f32 y2 = GetTop() + height*0.5f;
+	f32 y3 = GetTop() + height - height*0.15f;
+
+	int alpha = GetAlpha();
+
+	GX_Begin(GX_LINES, GX_VTXFMT0, 4);
+	GX_Position3f32(x2, y1, 0.0f);
+	GX_Color4u8(color.r, color.g, color.b, alpha);
+	GX_Position3f32(x2, y3, 0.0f);
+	GX_Color4u8(color.r, color.g, color.b, alpha);
+	GX_Position3f32(x1, y2, 0.0f);
+	GX_Color4u8(color.r, color.g, color.b, alpha);
+	GX_Position3f32(x3, y2, 0.0f);
+	GX_Color4u8(color.r, color.g, color.b, alpha);
+	GX_End();
+	GX_SetTevOp(GX_TEVSTAGE0, GX_MODULATE);
+}
diff --git a/source/GUI/gui_plus.hpp b/source/GUI/gui_plus.hpp
new file mode 100644
index 00000000..97a6eb5e
--- /dev/null
+++ b/source/GUI/gui_plus.hpp
@@ -0,0 +1,43 @@
+/****************************************************************************
+ * Copyright (C) 2012
+ * by Dimok
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any
+ * damages arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any
+ * purpose, including commercial applications, and to alter it and
+ * redistribute it freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you
+ * must not claim that you wrote the original software. If you use
+ * this software in a product, an acknowledgment in the product
+ * documentation would be appreciated but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and
+ * must not be misrepresented as being the original software.
+ *
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+ ***************************************************************************/
+#ifndef GUIPLUS_HPP_
+#define GUIPLUS_HPP_
+
+#include "GUI/gui.h"
+
+class GuiPlus : public GuiElement
+{
+	public:
+		GuiPlus() : Linewidth(2.0f) { color = (GXColor) {0, 0, 0, 255}; GX_SetLineWidth((u8) (Linewidth*6.0f), 0); }
+		//! Max line width is 42.5 pixel
+		void SetLinewidth(float w) { LOCK(this); Linewidth = w; GX_SetLineWidth((u8) (Linewidth*6.0f), 0); }
+		void SetColor(const GXColor c) { LOCK(this); color = c; }
+		void SetSize(int w, int h) { LOCK(this); width = w; height = h; }
+		void Draw();
+	protected:
+		GXColor color;
+		float Linewidth;
+};
+
+#endif
diff --git a/source/prompts/CategorySwitchPrompt.cpp b/source/prompts/CategorySwitchPrompt.cpp
index 50f97efc..c91bfd86 100644
--- a/source/prompts/CategorySwitchPrompt.cpp
+++ b/source/prompts/CategorySwitchPrompt.cpp
@@ -27,7 +27,8 @@
 #include "language/gettext.h"
 
 CategorySwitchPrompt::CategorySwitchPrompt()
-	: CategoryPrompt(tr("Show Categories")), oldSetting(Settings.EnabledCategories)
+	: CategoryPrompt(tr("Show Categories")), oldSettingEnabled(Settings.EnabledCategories),
+	oldSettingRequired(Settings.RequiredCategories), oldSettingForbidden(Settings.ForbiddenCategories)
 {
 	browser->checkBoxClicked.connect(this, &CategorySwitchPrompt::OnCheckboxClick);
 	browserRefresh.connect(this, &CategorySwitchPrompt::onBrowserRefresh);
@@ -38,7 +39,9 @@ CategorySwitchPrompt::CategorySwitchPrompt()
 
 void CategorySwitchPrompt::onResetChanges()
 {
-	Settings.EnabledCategories = oldSetting;
+	Settings.EnabledCategories = oldSettingEnabled;
+	Settings.RequiredCategories = oldSettingRequired;
+	Settings.ForbiddenCategories = oldSettingForbidden;
 	GameCategories.Load(Settings.ConfigPath);
 }
 
@@ -49,7 +52,9 @@ void CategorySwitchPrompt::onBrowserRefresh()
 	do
 	{
 		bool checked = false;
+		int style = CHECKSIGN;
 
+		// Verify the Enabled Categories [v]
 		for(u32 i = 0; i < Settings.EnabledCategories.size(); ++i)
 		{
 			if(Settings.EnabledCategories[i] == GameCategories.CategoryList.getCurrentID())
@@ -58,8 +63,32 @@ void CategorySwitchPrompt::onBrowserRefresh()
 				break;
 			}
 		}
-
-		browser->AddEntrie(tr(GameCategories.CategoryList.getCurrentName().c_str()), checked);
+		
+		// Verify the Forbidden Categories [X]
+		if(!checked)
+		for(u32 i = 0; i < Settings.ForbiddenCategories.size(); ++i)
+		{
+			if(Settings.ForbiddenCategories[i] == GameCategories.CategoryList.getCurrentID())
+			{
+				checked = true;
+				style = CROSS;
+				break;
+			}
+		}
+		
+		// Verify the Required Categories [+]
+		if(!checked)
+		for(u32 i = 0; i < Settings.RequiredCategories.size(); ++i)
+		{
+			if(Settings.RequiredCategories[i] == GameCategories.CategoryList.getCurrentID())
+			{
+				checked = true;
+				style = PLUS;
+				break;
+			}
+		}
+		
+		browser->AddEntrieMultiStates(tr(GameCategories.CategoryList.getCurrentName().c_str()), checked, style);
 	}
 	while(GameCategories.CategoryList.goToNext());
 
@@ -74,22 +103,69 @@ void CategorySwitchPrompt::OnCheckboxClick(GuiCheckbox *checkBox, int index)
 		GameCategories.CategoryList.goToNext();
 
 	u32 i;
-	for(i = 0; i < Settings.EnabledCategories.size(); ++i)
+	if(!checkBox->IsChecked())
 	{
-		if(Settings.EnabledCategories[i] == GameCategories.CategoryList.getCurrentID())
+		// Remove from Required
+		for(i = 0; i < Settings.RequiredCategories.size(); ++i)
 		{
-			if(!checkBox->IsChecked())
+			if(Settings.RequiredCategories[i] == GameCategories.CategoryList.getCurrentID())
 			{
-				Settings.EnabledCategories.erase(Settings.EnabledCategories.begin()+i);
+				Settings.RequiredCategories.erase(Settings.RequiredCategories.begin()+i);
 				markChanged();
+				break;
 			}
-			break;
 		}
 	}
-
-	if(i == Settings.EnabledCategories.size() && checkBox->IsChecked())
+	else if(checkBox->GetStyle() == CHECKSIGN)
 	{
+		// Add to Enabled
 		Settings.EnabledCategories.push_back(GameCategories.CategoryList.getCurrentID());
 		markChanged();
 	}
+	else if(checkBox->GetStyle() == CROSS)
+	{
+		// Remove from Enabled
+		for(i = 0; i < Settings.EnabledCategories.size(); ++i)
+		{
+			if(Settings.EnabledCategories[i] == GameCategories.CategoryList.getCurrentID())
+			{
+				Settings.EnabledCategories.erase(Settings.EnabledCategories.begin()+i);
+				break;
+			}
+		}
+		// Add to Forbidden
+		Settings.ForbiddenCategories.push_back(GameCategories.CategoryList.getCurrentID());
+		markChanged();
+	}
+	else if(checkBox->GetStyle() == PLUS && index > 0)
+	{
+		// Remove from Forbidden
+		for(i = 0; i < Settings.ForbiddenCategories.size(); ++i)
+		{
+			if(Settings.ForbiddenCategories[i] == GameCategories.CategoryList.getCurrentID())
+			{
+				Settings.ForbiddenCategories.erase(Settings.ForbiddenCategories.begin()+i);
+				break;
+			}
+		}
+		// Add to Required
+		Settings.RequiredCategories.push_back(GameCategories.CategoryList.getCurrentID());
+		markChanged();
+	}
+
+	// Override Style cycling for category "All"
+	if(index == 0 && checkBox->GetStyle() == PLUS)
+	{
+		checkBox->SetStyle(CHECKSIGN);
+		checkBox->SetChecked(false);
+		for(i = 0; i < Settings.ForbiddenCategories.size(); ++i)
+		{
+			if(Settings.ForbiddenCategories[i] == GameCategories.CategoryList.getCurrentID())
+			{
+				Settings.ForbiddenCategories.erase(Settings.ForbiddenCategories.begin()+i);
+				markChanged();
+				break;
+			}
+		}
+	}
 }
diff --git a/source/prompts/CategorySwitchPrompt.hpp b/source/prompts/CategorySwitchPrompt.hpp
index b1c0787f..0a867e8b 100644
--- a/source/prompts/CategorySwitchPrompt.hpp
+++ b/source/prompts/CategorySwitchPrompt.hpp
@@ -35,7 +35,16 @@ class CategorySwitchPrompt : public CategoryPrompt
 		void onBrowserRefresh();
 		void onResetChanges();
 
-		const std::vector<u32> oldSetting;
+		const std::vector<u32> oldSettingEnabled;
+		const std::vector<u32> oldSettingRequired;
+		const std::vector<u32> oldSettingForbidden;
 };
 
+enum
+{
+	CHECKSIGN,
+	CROSS,
+	PLUS,
+	MAX_CHECKBOX_STYLE
+};
 #endif
diff --git a/source/settings/CSettings.cpp b/source/settings/CSettings.cpp
index fe3b40cc..97e91e70 100644
--- a/source/settings/CSettings.cpp
+++ b/source/settings/CSettings.cpp
@@ -133,6 +133,8 @@ void CSettings::SetDefault()
 	ClockFontScaleFactor = 1.0f; // Scale of 1 to prevent misaligned clock.
 	EnabledCategories.resize(1);
 	EnabledCategories[0] = 0;
+	RequiredCategories.resize(0);
+	ForbiddenCategories.resize(0);
 	Wiinnertag = OFF;
 	SelectedGame = 0;
 	GameListOffset = 0;
@@ -333,6 +335,22 @@ bool CSettings::Save()
 			fprintf(file, ",");
 	}
 	fprintf(file, "\n");
+	fprintf(file, "RequiredCategories = ");
+	for(u32 i = 0; i < RequiredCategories.size(); ++i)
+	{
+		fprintf(file, "%i", RequiredCategories[i]);
+		if(i+1 < RequiredCategories.size())
+			fprintf(file, ",");
+	}
+	fprintf(file, "\n");
+	fprintf(file, "ForbiddenCategories = ");
+	for(u32 i = 0; i < ForbiddenCategories.size(); ++i)
+	{
+		fprintf(file, "%i", ForbiddenCategories[i]);
+		if(i+1 < ForbiddenCategories.size())
+			fprintf(file, ",");
+	}
+	fprintf(file, "\n");
 	fprintf(file, "Wiinnertag = %d\n", Wiinnertag);
 	fprintf(file, "WiinnertagPath = %s\n", WiinnertagPath);
 	fprintf(file, "SelectedGame = %d\n", SelectedGame);
@@ -940,6 +958,44 @@ bool CSettings::SetSetting(char *name, char *value)
 		}
 		return true;
 	}
+	else if (strcmp(name, "RequiredCategories") == 0)
+	{
+		RequiredCategories.clear();
+		char * strTok = strtok(value, ",");
+		while (strTok != NULL)
+		{
+			u32 id  = atoi(strTok);
+			u32 i;
+			for(i = 0; i < RequiredCategories.size(); ++i)
+			{
+				if(RequiredCategories[i] == id)
+					break;
+			}
+			if(i == RequiredCategories.size())
+				RequiredCategories.push_back(id);
+			strTok = strtok(NULL,",");
+		}
+		return true;
+	}
+	else if (strcmp(name, "ForbiddenCategories") == 0)
+	{
+		ForbiddenCategories.clear();
+		char * strTok = strtok(value, ",");
+		while (strTok != NULL)
+		{
+			u32 id  = atoi(strTok);
+			u32 i;
+			for(i = 0; i < ForbiddenCategories.size(); ++i)
+			{
+				if(ForbiddenCategories[i] == id)
+					break;
+			}
+			if(i == ForbiddenCategories.size())
+				ForbiddenCategories.push_back(id);
+			strTok = strtok(NULL,",");
+		}
+		return true;
+	}
 
 	return false;
 }
diff --git a/source/settings/CSettings.h b/source/settings/CSettings.h
index b619225e..1656015f 100644
--- a/source/settings/CSettings.h
+++ b/source/settings/CSettings.h
@@ -137,6 +137,8 @@ class CSettings
 		short GameListOffset;
 		short sneekVideoPatch;
 		std::vector<u32> EnabledCategories;
+		std::vector<u32> RequiredCategories;
+		std::vector<u32> ForbiddenCategories;
 		u8 EntryIOS;
 		short NandEmuMode;
 		short NandEmuChanMode;
diff --git a/source/usbloader/GameList.cpp b/source/usbloader/GameList.cpp
index da59d365..1da98e52 100644
--- a/source/usbloader/GameList.cpp
+++ b/source/usbloader/GameList.cpp
@@ -229,14 +229,72 @@ void GameList::InternalFilterList(std::vector<struct discHdr> &FullList)
 
 		//! Category filter
 		u32 n;
-		for(n = 0; n < Settings.EnabledCategories.size(); ++n)
+		enum { DISABLED, ENABLED, HIDEFORBIDDEN };
+		int allType = DISABLED;
+		// verify the display mode for category "All"
+		for(u32 n = 0; n < Settings.EnabledCategories.size(); ++n)
 		{
-			if(GameCategories.isInCategory((char *) header->id, Settings.EnabledCategories[n]))
+			if(Settings.EnabledCategories[n] == 0)
+			{
+				allType = ENABLED; // All = Enabled
 				break;
+			}
 		}
-		if(n == Settings.EnabledCategories.size())
-			continue;
-
+		for(u32 n = 0; n < Settings.ForbiddenCategories.size(); ++n)
+		{
+			if(Settings.ForbiddenCategories[n] == 0)
+			{
+				allType = HIDEFORBIDDEN; // All = Enabled but hide Forbidden categories
+				break;
+			}
+		}
+		
+		if(allType == DISABLED)
+		{
+			// Remove TitleID if it contains a forbidden categories
+			for(n = 0; n < Settings.ForbiddenCategories.size(); ++n)
+			{
+				if(GameCategories.isInCategory((char *) header->id, Settings.ForbiddenCategories[n]))
+					break;
+			}
+			if(n < Settings.ForbiddenCategories.size())
+				continue;
+			
+			// Remove TitleID is it doesn't contain a required categories
+			for(n = 0; n < Settings.RequiredCategories.size(); ++n)
+			{
+				if(!GameCategories.isInCategory((char *) header->id, Settings.RequiredCategories[n]))
+					break;
+			}
+			if(n < Settings.RequiredCategories.size())
+				continue;
+			
+			// If there's no required categories, verify if the TitleID should be kept or removed
+			if(Settings.RequiredCategories.size() == 0)
+			{
+				for(n = 0; n < Settings.EnabledCategories.size(); ++n)
+				{
+					if(GameCategories.isInCategory((char *) header->id, Settings.EnabledCategories[n]))
+						break;
+				}
+				if(n == Settings.EnabledCategories.size())
+					continue;
+			}
+		}
+		
+		if(allType == HIDEFORBIDDEN)
+		{
+			// Remove TitleID if it contains a forbidden categories
+			for(n = 0; n < Settings.ForbiddenCategories.size(); ++n)
+			{
+				if(GameCategories.isInCategory((char *) header->id, Settings.ForbiddenCategories[n]))
+					if(Settings.ForbiddenCategories[n] >0)
+						break;
+			}
+			if(n < Settings.ForbiddenCategories.size())
+				continue;
+		}	
+		
 		FilteredList.push_back(header);
 	}
 }