diff --git a/Aquaria/ScriptInterface.cpp b/Aquaria/ScriptInterface.cpp
index cef0503..5ecbbfe 100644
--- a/Aquaria/ScriptInterface.cpp
+++ b/Aquaria/ScriptInterface.cpp
@@ -10045,6 +10045,13 @@ luaFunc(loadXMLTable)
 	return 1;
 }
 
+luaFunc(worldmap_forgetMap)
+{
+	const std::string s = getString(L);
+	bool ok = dsq->continuity.worldMap.forgetMap(s);
+	luaReturnBool(ok);
+}
+
 //--------------------------------------------------------------------------------------------
 
 #define luaRegister(func)	{#func, l_##func}
@@ -11123,6 +11130,8 @@ static const struct {
 	luaRegister(quadgrid_resetUV),
 	luaRegister(quadgrid_resetPos),
 
+	luaRegister(worldmap_forgetMap),
+
 #undef MK_FUNC
 #undef MK_ALIAS
 #define MK_FUNC(base, getter, prefix, suffix) luaRegister(prefix##_##suffix),
diff --git a/Aquaria/WorldMap.h b/Aquaria/WorldMap.h
index b59bf0c..cffcbd8 100644
--- a/Aquaria/WorldMap.h
+++ b/Aquaria/WorldMap.h
@@ -44,10 +44,11 @@ struct WorldMap
 	WorldMap();
 	void load();
 	void save();
-	void revealMap(const std::string &name);
 	WorldMapTile *getWorldMapTile(const std::string &name);
 	WorldMapTile *getWorldMapTileByIndex(int index);
-	void revealMapIndex(int index);
+	bool revealMap(const std::string &name);
+	bool revealMapIndex(int index);
+	bool forgetMap(const std::string &name);
 
 	int gw, gh;
 	typedef std::vector<WorldMapTile> WorldMapTiles;
diff --git a/Aquaria/WorldMapTiles.cpp b/Aquaria/WorldMapTiles.cpp
index 1a096df..92766bd 100644
--- a/Aquaria/WorldMapTiles.cpp
+++ b/Aquaria/WorldMapTiles.cpp
@@ -391,22 +391,36 @@ void WorldMap::save()
 	}
 }
 
-void WorldMap::revealMap(const std::string &name)
+bool WorldMap::revealMap(const std::string &name)
 {
 	WorldMapTile *t = getWorldMapTile(name);
 	if (t)
 	{
 		t->revealed = true;
 	}
+	return !!t;
 }
 
-void WorldMap::revealMapIndex(int index)
+bool WorldMap::revealMapIndex(int index)
 {
 	WorldMapTile *t = getWorldMapTileByIndex(index);
 	if (t)
 	{
 		t->revealed = true;
 	}
+	return !!t;
+}
+
+bool WorldMap::forgetMap(const std::string &name)
+{
+	WorldMapTile *t = getWorldMapTile(name);
+	if (t)
+	{
+		t->revealed = false;
+		t->visited.clear();
+		t->dirty = true;
+	}
+	return !!t;
 }
 
 WorldMapTile *WorldMap::getWorldMapTile(const std::string &name)