diff --git a/data/menubar.xml b/data/menubar.xml
index 391960ed..2adc40bd 100644
--- a/data/menubar.xml
+++ b/data/menubar.xml
@@ -38,11 +38,12 @@
             <item name="Find $Action" action="SEARCH_ON_MAP_ACTION" help="Find all items with an action ID on map."/>
             <item name="Find $Container" action="SEARCH_ON_MAP_CONTAINER" help="Find all containers on map."/>
             <item name="Find $Writeable" action="SEARCH_ON_MAP_WRITEABLE" help="Find all writeable items on map."/>
+            <item name="Find $Duplicate Items" action="SEARCH_ON_MAP_DUPLICATE" help="Find all positions where there are duplicate items on the map."/>
         </menu>
         <separator/>
         <menu name="$Border Options">
             <item name="Border $Automagic" hotkey="A" action="AUTOMAGIC" help="Turns on all automatic border functions."/>
-			<separator/>
+            <separator/>
             <item name="$Borderize Selection" hotkey="Ctrl+B" action="BORDERIZE_SELECTION" help="Creates automatic borders in the entire selected area."/>
             <item name="Borderize $Map" action="BORDERIZE_MAP" help="Reborders the entire map."/>
             <item name="Ra$ndomize Selection" action="RANDOMIZE_SELECTION" help="Randomizes the ground tiles of the selected area."/>
@@ -52,6 +53,7 @@
             <item name="$Remove Items by ID..." action="MAP_REMOVE_ITEMS" help="Removes all items with the selected ID from the map."/>
             <item name="Remove $all corpses..." action="MAP_REMOVE_CORPSES" help="Removes all corpses from the map."/>
             <item name="Remove all $unreachable tiles..." action="MAP_REMOVE_UNREACHABLE_TILES" help="Removes all tiles that cannot be reached (or seen) by the player from the map."/>
+            <item name="Remove all $duplicates items..." action="REMOVE_ON_MAP_DUPLICATE_ITEMS" help="Removes all items duplicates on map."/>
             <item name="Remove empty monsters spawns" action="MAP_REMOVE_EMPTY_MONSTERS_SPAWNS" help="Removes all empty monsters spawns from the map."/>
             <item name="Remove empty npcs spawns" action="MAP_REMOVE_EMPTY_NPCS_SPAWNS" help="Removes all empty npcs spawns from the map."/>
             <item name="$Clear Invalid Houses" action="CLEAR_INVALID_HOUSES" help="Clears house tiles not belonging to any house."/>
@@ -81,6 +83,7 @@
         <item name="Find Item on Selection" action="SEARCH_ON_SELECTION_ITEM" help="Find items on selected area."/>
         <item name="Remove Item on Selection" action="REMOVE_ON_SELECTION_ITEM" help="Remove item on selected area."/>
         <item name="Remove Monsters on Selection" action="REMOVE_ON_SELECTION_MONSTER" help="Remove monsters on selected area."/>
+        <item name="Remove Duplicates Items on Selection" action="REMOVE_ON_SELECTION_DUPLICATE_ITEMS" help="Removes all items duplicates selected area."/>
         <separator/>
         <menu name="$Find on Selection">
             <item name="Find $Everything" action="SEARCH_ON_SELECTION_EVERYTHING" help="Find all unique/action/text/container items."/>
@@ -89,6 +92,7 @@
             <item name="Find $Action" action="SEARCH_ON_SELECTION_ACTION" help="Find all items with an action ID on selected area."/>
             <item name="Find $Container" action="SEARCH_ON_SELECTION_CONTAINER" help="Find all containers on selected area."/>
             <item name="Find $Writeable" action="SEARCH_ON_SELECTION_WRITEABLE" help="Find all writeable items on selected area."/>
+            <item name="Find $Duplicate Items" action="SEARCH_ON_SELECTION_DUPLICATE" help="Find all positions where there are duplicate items on selected area."/>
         </menu>
         <separator/>
         <menu name="$Selection Mode">
diff --git a/source/item.h b/source/item.h
index 1072ab8b..8b148133 100644
--- a/source/item.h
+++ b/source/item.h
@@ -303,6 +303,9 @@ class Item : public ItemAttributes {
 	bool isMetaItem() const {
 		return getItemType().isMetaItem();
 	}
+	bool hasElevation() const {
+		return getItemType().hasElevation;
+	}
 
 	// Wall alignment (vertical, horizontal, pole, corner)
 	BorderType getWallAlignment() const;
diff --git a/source/main_menubar.cpp b/source/main_menubar.cpp
index 1e2857b8..20a54b8c 100644
--- a/source/main_menubar.cpp
+++ b/source/main_menubar.cpp
@@ -201,6 +201,11 @@ MainMenuBar::MainMenuBar(MainFrame* frame) :
 	MAKE_ACTION(GOTO_WEBSITE, wxITEM_NORMAL, OnGotoWebsite);
 	MAKE_ACTION(ABOUT, wxITEM_NORMAL, OnAbout);
 
+	MAKE_ACTION(SEARCH_ON_MAP_DUPLICATE, wxITEM_NORMAL, OnSearchForDuplicateItemsOnMap);
+	MAKE_ACTION(SEARCH_ON_SELECTION_DUPLICATE, wxITEM_NORMAL, OnSearchForDuplicateItemsOnSelection);
+	MAKE_ACTION(REMOVE_ON_MAP_DUPLICATE_ITEMS, wxITEM_NORMAL, OnRemoveForDuplicateItemsOnMap);
+	MAKE_ACTION(REMOVE_ON_SELECTION_DUPLICATE_ITEMS, wxITEM_NORMAL, OnRemoveForDuplicateItemsOnSelection);
+
 	// A deleter, this way the frame does not need
 	// to bother deleting us.
 	class CustomMenuBar : public wxMenuBar {
@@ -409,6 +414,11 @@ void MainMenuBar::Update() {
 
 	EnableItem(DEBUG_VIEW_DAT, loaded);
 
+	EnableItem(SEARCH_ON_MAP_DUPLICATE, is_host);
+	EnableItem(SEARCH_ON_SELECTION_DUPLICATE, has_selection && is_host);
+	EnableItem(REMOVE_ON_MAP_DUPLICATE_ITEMS, is_local);
+	EnableItem(REMOVE_ON_SELECTION_DUPLICATE_ITEMS, is_local && has_selection);
+
 	UpdateFloorMenu();
 	UpdateIndicatorsMenu();
 }
@@ -2267,3 +2277,158 @@ void MainMenuBar::SearchItems(bool unique, bool action, bool container, bool wri
 		result->AddPosition(searcher.desc(iter->second), iter->first->getPosition());
 	}
 }
+
+void MainMenuBar::OnSearchForDuplicateItemsOnMap(wxCommandEvent &WXUNUSED(event)) {
+	SearchDuplicatedItems(false);
+}
+
+void MainMenuBar::OnSearchForDuplicateItemsOnSelection(wxCommandEvent &WXUNUSED(event)) {
+	SearchDuplicatedItems(true);
+}
+
+void MainMenuBar::OnRemoveForDuplicateItemsOnMap(wxCommandEvent &WXUNUSED(event)) {
+	RemoveDuplicatesItems(false);
+}
+
+void MainMenuBar::OnRemoveForDuplicateItemsOnSelection(wxCommandEvent &WXUNUSED(event)) {
+	RemoveDuplicatesItems(true);
+}
+
+namespace SearchDuplicatedItems {
+	struct condition {
+		std::unordered_set<Tile*> foundTiles;
+
+		void operator()(Map& map, Tile* tile, Item* item, long long done) {
+			if (done % 0x8000 == 0) {
+				g_gui.SetLoadDone((unsigned int)(100 * done / map.getTileCount()));
+			}
+
+			if (!tile) {
+				return;
+			}
+
+			if (!item) {
+				return;
+			}
+
+			if (item->isGroundTile()) {
+				return;
+			}
+
+			if (foundTiles.count(tile) == 0) {
+				std::unordered_set<int> itemIDs;
+				for (Item* existingItem : tile->items) {
+					if (itemIDs.count(existingItem->getID()) > 0) {
+						foundTiles.insert(tile);
+						break;
+					}
+					itemIDs.insert(existingItem->getID());
+				}
+			}
+		}
+	};
+}
+
+void MainMenuBar::SearchDuplicatedItems(bool onSelection/* = false*/) {
+	if (!g_gui.IsEditorOpen()) {
+		return;
+	}
+
+	if (onSelection) {
+		g_gui.CreateLoadBar("Searching on selected area...");
+	} else {
+		g_gui.CreateLoadBar("Searching on map...");
+	}
+
+	SearchDuplicatedItems::condition finder;
+
+	foreach_ItemOnMap(g_gui.GetCurrentMap(), finder, onSelection);
+	std::unordered_set<Tile*>& foundTiles = finder.foundTiles;
+
+	g_gui.DestroyLoadBar();
+
+	size_t setSize = foundTiles.size();
+
+	wxString msg;
+	msg << setSize << " duplicate items founded.";
+
+	g_gui.PopupDialog("Search completed", msg, wxOK);
+
+	SearchResultWindow* result = g_gui.ShowSearchWindow();
+	result->Clear();
+	for (const Tile* tile : foundTiles) {
+		result->AddPosition("Duplicate items", tile->getPosition());
+	}
+}
+
+namespace RemoveDuplicatesItems {
+	struct condition {
+		bool operator()(Map& map, Tile* tile, Item* item, long long removed, long long done) {
+			if (done % 0x8000 == 0) {
+				g_gui.SetLoadDone((unsigned int)(100 * done / map.getTileCount()));
+			}
+
+			if (!tile) {
+				return false;
+			}
+
+			if (!item) {
+				return false;
+			}
+
+			if (item->isGroundTile()) {
+				return false;
+			}
+
+			if (item->isMoveable() && item->hasElevation()) {
+				return false;
+			}
+
+			std::unordered_set<int> itemIDsDuplicates;
+			for (Item* itemInTile : tile->items) {
+				if (itemInTile && itemInTile->getID() == item->getID()) {
+					if (itemIDsDuplicates.count(itemInTile->getID()) > 0) {
+						itemIDsDuplicates.clear();
+						return true;
+					}
+					itemIDsDuplicates.insert(itemInTile->getID());
+				}
+			}
+
+			itemIDsDuplicates.clear();
+			return false;
+		}
+	};
+}
+
+void MainMenuBar::RemoveDuplicatesItems(bool onSelection/* = false*/) {
+	if (!g_gui.IsEditorOpen()) {
+		return;
+	}
+
+	int ok = g_gui.PopupDialog("Remove Duplicate Items", "Do you want to remove all duplicates items from the map?", wxYES | wxNO);
+
+	if(ok == wxID_YES) {
+		g_gui.GetCurrentEditor()->getSelection().clear();
+		g_gui.GetCurrentEditor()->clearActions();
+
+		RemoveDuplicatesItems::condition func;
+
+		if (onSelection) {
+			g_gui.CreateLoadBar("Searching on selected area for items to remove...");
+		} else {
+			g_gui.CreateLoadBar("Searching on map for items to remove...");
+		}
+
+		long long removed = RemoveItemDuplicateOnMap(g_gui.GetCurrentMap(), func, onSelection);
+
+		g_gui.DestroyLoadBar();
+
+		wxString msg;
+		msg << removed << " duplicate items deleted.";
+
+		g_gui.PopupDialog("Search completed", msg, wxOK);
+
+		g_gui.GetCurrentMap().doChange();
+	}
+}
diff --git a/source/main_menubar.h b/source/main_menubar.h
index 6468498f..788ae74f 100644
--- a/source/main_menubar.h
+++ b/source/main_menubar.h
@@ -157,6 +157,10 @@ namespace MenuBar {
 		EXTENSIONS,
 		GOTO_WEBSITE,
 		ABOUT,
+		SEARCH_ON_MAP_DUPLICATE,
+		SEARCH_ON_SELECTION_DUPLICATE,
+		REMOVE_ON_MAP_DUPLICATE_ITEMS,
+		REMOVE_ON_SELECTION_DUPLICATE_ITEMS,
 	};
 }
 
@@ -294,6 +298,10 @@ class MainMenuBar : public wxEvtHandler {
 	void OnListExtensions(wxCommandEvent &event);
 	void OnGotoWebsite(wxCommandEvent &event);
 	void OnAbout(wxCommandEvent &event);
+	void OnSearchForDuplicateItemsOnMap(wxCommandEvent &event);
+	void OnSearchForDuplicateItemsOnSelection(wxCommandEvent &event);
+	void OnRemoveForDuplicateItemsOnMap(wxCommandEvent &event);
+	void OnRemoveForDuplicateItemsOnSelection(wxCommandEvent &event);
 
 protected:
 	// Load and returns a menu item, also sets accelerator
@@ -301,7 +309,8 @@ class MainMenuBar : public wxEvtHandler {
 	// Checks the items in the menus according to the settings (in config)
 	void LoadValues();
 	void SearchItems(bool unique, bool action, bool container, bool writable, bool onSelection = false);
-
+	void SearchDuplicatedItems(bool onSelection = false);
+	void RemoveDuplicatesItems(bool onSelection = false);
 protected:
 	MainFrame* frame;
 	wxMenuBar* menubar;
diff --git a/source/map.h b/source/map.h
index c95f7a02..91862ea2 100644
--- a/source/map.h
+++ b/source/map.h
@@ -323,4 +323,43 @@ inline int64_t RemoveItemOnMap(Map &map, RemoveIfType &condition, bool selectedO
 
 int64_t RemoveMonstersOnMap(Map &map, bool selectedOnly);
 
+template <typename RemoveIfType>
+inline int64_t RemoveItemDuplicateOnMap(Map &map, RemoveIfType &condition, bool selectedOnly) {
+	int64_t done = 0;
+	int64_t removed = 0;
+
+	MapIterator it = map.begin();
+	MapIterator end = map.end();
+
+	while (it != end) {
+		++done;
+		Tile* tile = (*it)->get();
+		if (selectedOnly && !tile->isSelected()) {
+			++it;
+			continue;
+		}
+
+		if (tile->ground) {
+			if (condition(map, tile, tile->ground, removed, done)) {
+				delete tile->ground;
+				tile->ground = nullptr;
+				++removed;
+			}
+		}
+
+		for (auto iit = tile->items.begin(); iit != tile->items.end();) {
+			Item* item = *iit;
+			if (condition(map, tile, item, removed, done)) {
+				iit = tile->items.erase(iit);
+				delete item;
+				++removed;
+			} else {
+				++iit;
+			}
+		}
+		++it;
+	}
+	return removed;
+}
+
 #endif