diff --git a/src/Components/Modules/Bots.cpp b/src/Components/Modules/Bots.cpp
index d3837959..27c44409 100644
--- a/src/Components/Modules/Bots.cpp
+++ b/src/Components/Modules/Bots.cpp
@@ -110,7 +110,7 @@ namespace Components
 
 	void Bots::AddMethods()
 	{
-		Script::AddFunction("SetPing", [](Game::scr_entref_t entref) // gsc: self SetPing(<int>)
+		Script::AddMethod("SetPing", [](Game::scr_entref_t entref) // gsc: self SetPing(<int>)
 		{
 			auto ping = Game::Scr_GetInt(0);
 
@@ -128,7 +128,7 @@ namespace Components
 			client->ping = static_cast<int16_t>(ping);
 		});
 
-		Script::AddFunction("IsTestClient", [](Game::scr_entref_t entref) // Usage: <bot> IsTestClient();
+		Script::AddMethod("IsTestClient", [](Game::scr_entref_t entref) // Usage: <bot> IsTestClient();
 		{
 			const auto* gentity = Game::GetPlayerEntity(entref);
 			const auto* client = Script::GetClient(gentity);
@@ -136,7 +136,7 @@ namespace Components
 			Game::Scr_AddBool(client->bIsTestClient == 1);
 		});
 
-		Script::AddFunction("BotStop", [](Game::scr_entref_t entref) // Usage: <bot> BotStop();
+		Script::AddMethod("BotStop", [](Game::scr_entref_t entref) // Usage: <bot> BotStop();
 		{
 			const auto* ent = Game::GetPlayerEntity(entref);
 			const auto* client = Script::GetClient(ent);
@@ -152,7 +152,7 @@ namespace Components
 			g_botai[entref.entnum].active = false;
 		});
 
-		Script::AddFunction("BotWeapon", [](Game::scr_entref_t entref) // Usage: <bot> BotWeapon(<str>);
+		Script::AddMethod("BotWeapon", [](Game::scr_entref_t entref) // Usage: <bot> BotWeapon(<str>);
 		{
 			const auto* weapon = Game::Scr_GetString(0);
 
@@ -176,7 +176,7 @@ namespace Components
 			g_botai[entref.entnum].active = true;
 		});
 
-		Script::AddFunction("BotAction", [](Game::scr_entref_t entref) // Usage: <bot> BotAction(<str action>);
+		Script::AddMethod("BotAction", [](Game::scr_entref_t entref) // Usage: <bot> BotAction(<str action>);
 		{
 			const auto* action = Game::Scr_GetString(0);
 
@@ -218,7 +218,7 @@ namespace Components
 			Game::Scr_ParamError(0, "^1BotAction: Unknown action.\n");
 		});
 
-		Script::AddFunction("BotMovement", [](Game::scr_entref_t entref) // Usage: <bot> BotMovement(<int>, <int>);
+		Script::AddMethod("BotMovement", [](Game::scr_entref_t entref) // Usage: <bot> BotMovement(<int>, <int>);
 		{
 			auto forwardInt = Game::Scr_GetInt(0);
 			auto rightInt = Game::Scr_GetInt(1);
diff --git a/src/Components/Modules/ClientCommand.cpp b/src/Components/Modules/ClientCommand.cpp
index f9554c2e..45a696e3 100644
--- a/src/Components/Modules/ClientCommand.cpp
+++ b/src/Components/Modules/ClientCommand.cpp
@@ -176,7 +176,7 @@ namespace Components
 
 	void ClientCommand::AddScriptFunctions()
 	{
-		Script::AddFunction("Noclip", [](Game::scr_entref_t entref) // gsc: Noclip(<optional int toggle>);
+		Script::AddMethod("Noclip", [](Game::scr_entref_t entref) // gsc: Noclip(<optional int toggle>);
 		{
 			const auto* ent = Game::GetPlayerEntity(entref);
 
@@ -197,7 +197,7 @@ namespace Components
 			}
 		});
 
-		Script::AddFunction("Ufo", [](Game::scr_entref_t entref) // gsc: Ufo(<optional int toggle>);
+		Script::AddMethod("Ufo", [](Game::scr_entref_t entref) // gsc: Ufo(<optional int toggle>);
 		{
 			const auto* ent = Game::GetPlayerEntity(entref);
 
@@ -218,7 +218,7 @@ namespace Components
 			}
 		});
 
-		Script::AddFunction("God", [](Game::scr_entref_t entref) // gsc: God(<optional int toggle>);
+		Script::AddMethod("God", [](Game::scr_entref_t entref) // gsc: God(<optional int toggle>);
 		{
 			auto* ent = Game::GetEntity(entref);
 
@@ -239,7 +239,7 @@ namespace Components
 			}
 		});
 
-		Script::AddFunction("Demigod", [](Game::scr_entref_t entref) // gsc: Demigod(<optional int toggle>);
+		Script::AddMethod("Demigod", [](Game::scr_entref_t entref) // gsc: Demigod(<optional int toggle>);
 		{
 			auto* ent = Game::GetEntity(entref);
 
@@ -260,7 +260,7 @@ namespace Components
 			}
 		});
 
-		Script::AddFunction("Notarget", [](Game::scr_entref_t entref) // gsc: Notarget(<optional int toggle>);
+		Script::AddMethod("Notarget", [](Game::scr_entref_t entref) // gsc: Notarget(<optional int toggle>);
 		{
 			auto* ent = Game::GetEntity(entref);
 
diff --git a/src/Components/Modules/Download.cpp b/src/Components/Modules/Download.cpp
index d2644013..39529219 100644
--- a/src/Components/Modules/Download.cpp
+++ b/src/Components/Modules/Download.cpp
@@ -964,7 +964,7 @@ namespace Components
 			Download::ScriptDownloads.clear();
 		});
 
-		Script::AddFunction("HttpGet", [](Game::scr_entref_t)
+		Script::AddFunction("HttpGet", []()
 		{
 			if (!Flags::HasFlag("scriptablehttp"))
 				return;
@@ -985,7 +985,7 @@ namespace Components
 			Game::RemoveRefToObject(object);
 		});
 
-		Script::AddFunction("HttpCancel", [](Game::scr_entref_t)
+		Script::AddFunction("HttpCancel", []()
 		{
 			if (!Flags::HasFlag("scriptablehttp"))
 				return;
diff --git a/src/Components/Modules/Script.cpp b/src/Components/Modules/Script.cpp
index d7527456..6aa19501 100644
--- a/src/Components/Modules/Script.cpp
+++ b/src/Components/Modules/Script.cpp
@@ -4,7 +4,8 @@ namespace Components
 {
 	std::string Script::ScriptName;
 	std::vector<int> Script::ScriptHandles;
-	std::vector<Script::Function> Script::ScriptFunctions;
+	std::unordered_map<std::string, Game::BuiltinFunctionDef> Script::CustomScrFunctions;
+	std::unordered_map<std::string, Game::BuiltinMethodDef> Script::CustomScrMethods;
 	std::vector<std::string> Script::ScriptNameStack;
 	unsigned short Script::FunctionName;
 	std::unordered_map<std::string, std::string> Script::ScriptStorage;
@@ -139,11 +140,9 @@ namespace Components
 			std::string buffer = script.getBuffer();
 			Utils::String::Replace(buffer, "\t", " ");
 
-			int line = 1;
-			int lineOffset = 0;
-			int inlineOffset = 0;
+			auto line = 1, lineOffset = 0, inlineOffset = 0;
 
-			for (unsigned int i = 0; i < buffer.size(); ++i)
+			for (size_t i = 0; i < buffer.size(); ++i)
 			{
 				// Terminate line
 				if (i == offset)
@@ -160,7 +159,7 @@ namespace Components
 				if (buffer[i] == '\n')
 				{
 					++line;
-					lineOffset = i; // Includes the line break!
+					lineOffset = static_cast<int>(i); // Includes the line break!
 					inlineOffset = 0;
 				}
 				else
@@ -172,7 +171,7 @@ namespace Components
 			Logger::Print(23, "in file %s, line %d:", filename, line);
 			Logger::Print(23, "%s\n", buffer.data() + lineOffset);
 
-			for (int i = 0; i < (inlineOffset - 1); ++i)
+			for (auto i = 0; i < (inlineOffset - 1); ++i)
 			{
 				Logger::Print(23, " ");
 			}
@@ -248,7 +247,7 @@ namespace Components
 
 		for (auto file : list)
 		{
-			file = "scripts/" + file;
+			file.insert(0, "scripts/");
 
 			if (Utils::String::EndsWith(file, ".gsc"))
 			{
@@ -271,61 +270,72 @@ namespace Components
 		Game::GScr_LoadGameTypeScript();
 	}
 
-	void Script::AddFunction(const std::string& name, Game::scr_function_t function, bool isDev)
+	void Script::AddFunction(const char* name, Game::xfunction_t func, int type)
 	{
-		for (auto i = Script::ScriptFunctions.begin(); i != Script::ScriptFunctions.end();)
-		{
-			if (i->getName() == name)
-			{
-				i = Script::ScriptFunctions.erase(i);
-				continue;
-			}
+		Game::BuiltinFunctionDef toAdd;
+		toAdd.actionString = name;
+		toAdd.actionFunc = func;
+		toAdd.type = type;
 
-			++i;
-		}
-
-		Script::ScriptFunctions.push_back({ name, function, isDev });
+		CustomScrFunctions.insert_or_assign(Utils::String::ToLower(name), std::move(toAdd));
 	}
 
-	Game::scr_function_t Script::GetFunction(void* caller, const char** name, int* isDev)
+	void Script::AddMethod(const char* name, Game::xmethod_t func, int type)
 	{
-		for (auto& function : Script::ScriptFunctions)
-		{
-			if (name && *name)
-			{
-				if (Utils::String::ToLower(*name) == Utils::String::ToLower(function.getName()))
-				{
-					*name = function.getName();
-					*isDev = function.isDev();
-					return function.getFunction();
-				}
-			}
-			else if (caller == reinterpret_cast<void*>(0x465781))
-			{
-				Game::Scr_RegisterFunction(function.getFunction());
-			}
-		}
+		Game::BuiltinMethodDef toAdd;
+		toAdd.actionString = name;
+		toAdd.actionFunc = func;
+		toAdd.type = type;
 
-		return nullptr;
+		CustomScrMethods.insert_or_assign(Utils::String::ToLower(name), std::move(toAdd));
 	}
 
-	__declspec(naked) void Script::GetFunctionStub()
+	Game::xfunction_t Script::BuiltIn_GetFunctionStub(const char** pName, int* type)
 	{
-		__asm
+		if (pName != nullptr)
 		{
-			test eax, eax
-			jnz returnSafe
+			const auto got = Script::CustomScrFunctions.find(Utils::String::ToLower(*pName));
 
-			sub esp, 8h
-			push [esp + 10h]
-			call Script::GetFunction
-			add esp, 0Ch
-
-		returnSafe:
-			pop edi
-			pop esi
-			retn
+			// If no function was found let's call game's function
+			if (got != Script::CustomScrFunctions.end())
+			{
+				*type = got->second.type;
+				return got->second.actionFunc;
+			}			
 		}
+		else
+		{
+			for (const auto& [name, builtin] : Script::CustomScrFunctions)
+			{
+				Game::Scr_RegisterFunction(reinterpret_cast<int>(builtin.actionFunc), name.data());
+			}
+		}
+
+		return Utils::Hook::Call<Game::xfunction_t(const char**, int*)>(0x5FA2B0)(pName, type); // BuiltIn_GetFunction
+	}
+
+	Game::xmethod_t Script::BuiltIn_GetMethod(const char** pName, int* type)
+	{
+		if (pName != nullptr)
+		{
+			const auto got = Script::CustomScrMethods.find(Utils::String::ToLower(*pName));
+
+			// If no method was found let's call game's function
+			if (got != Script::CustomScrMethods.end())
+			{
+				*type = got->second.type;
+				return got->second.actionFunc;
+			}
+		}
+		else
+		{
+			for (const auto& [name, builtin] : Script::CustomScrMethods)
+			{
+				Game::Scr_RegisterFunction(reinterpret_cast<int>(builtin.actionFunc), name.data());
+			}
+		}
+
+		return Utils::Hook::Call<Game::xmethod_t(const char**, int*)>(0x5FA360)(pName, type); // Player_GetMethod
 	}
 
 	void Script::StoreScriptBaseProgramNum()
@@ -539,7 +549,7 @@ namespace Components
 
 	void Script::AddFunctions()
 	{
-		Script::AddFunction("ReplaceFunc", [](Game::scr_entref_t) // gsc: ReplaceFunc(<function>, <function>)
+		Script::AddFunction("ReplaceFunc", []() // gsc: ReplaceFunc(<function>, <function>)
 		{
 			if (Game::Scr_GetNumParam() != 2u)
 			{
@@ -554,7 +564,7 @@ namespace Components
 		});
 
 		// System time
-		Script::AddFunction("GetSystemTime", [](Game::scr_entref_t) // gsc: GetSystemTime()
+		Script::AddFunction("GetSystemTime", []() // gsc: GetSystemTime()
 		{
 			SYSTEMTIME time;
 			GetSystemTime(&time);
@@ -562,7 +572,7 @@ namespace Components
 			Game::Scr_AddInt(time.wSecond);
 		});
 
-		Script::AddFunction("GetSystemMilliseconds", [](Game::scr_entref_t) // gsc: GetSystemMilliseconds()
+		Script::AddFunction("GetSystemMilliseconds", []() // gsc: GetSystemMilliseconds()
 		{
 			SYSTEMTIME time;
 			GetSystemTime(&time);
@@ -571,7 +581,7 @@ namespace Components
 		});
 
 		// Executes command to the console
-		Script::AddFunction("Exec", [](Game::scr_entref_t) // gsc: Exec(<string>)
+		Script::AddFunction("Exec", []() // gsc: Exec(<string>)
 		{
 			const auto str = Game::Scr_GetString(0);
 
@@ -585,7 +595,7 @@ namespace Components
 		});
 
 		// Allow printing to the console even when developer is 0
-		Script::AddFunction("PrintConsole", [](Game::scr_entref_t) // gsc: PrintConsole(<string>)
+		Script::AddFunction("PrintConsole", []() // gsc: PrintConsole(<string>)
 		{
 			for (auto i = 0u; i < Game::Scr_GetNumParam(); i++)
 			{
@@ -602,7 +612,7 @@ namespace Components
 		});
 
 		// Script Storage Functions
-		Script::AddFunction("StorageSet", [](Game::scr_entref_t) // gsc: StorageSet(<str key>, <str data>);
+		Script::AddFunction("StorageSet", []() // gsc: StorageSet(<str key>, <str data>);
 		{
 			const auto* key = Game::Scr_GetString(0);
 			const auto* value = Game::Scr_GetString(1);
@@ -616,7 +626,7 @@ namespace Components
 			Script::ScriptStorage.insert_or_assign(key, value);
 		});
 
-		Script::AddFunction("StorageRemove", [](Game::scr_entref_t) // gsc: StorageRemove(<str key>);
+		Script::AddFunction("StorageRemove", []() // gsc: StorageRemove(<str key>);
 		{
 			const auto* key = Game::Scr_GetString(0);
 
@@ -635,7 +645,7 @@ namespace Components
 			Script::ScriptStorage.erase(key);
 		});
 
-		Script::AddFunction("StorageGet", [](Game::scr_entref_t) // gsc: StorageGet(<str key>);
+		Script::AddFunction("StorageGet", []() // gsc: StorageGet(<str key>);
 		{
 			const auto* key = Game::Scr_GetString(0);
 
@@ -655,7 +665,7 @@ namespace Components
 			Game::Scr_AddString(data.data());
 		});
 
-		Script::AddFunction("StorageHas", [](Game::scr_entref_t) // gsc: StorageHas(<str key>);
+		Script::AddFunction("StorageHas", []() // gsc: StorageHas(<str key>);
 		{
 			const auto* key = Game::Scr_GetString(0);
 
@@ -668,13 +678,13 @@ namespace Components
 			Game::Scr_AddBool(static_cast<int>(Script::ScriptStorage.count(key))); // Until C++17
 		});
 
-		Script::AddFunction("StorageClear", [](Game::scr_entref_t) // gsc: StorageClear();
+		Script::AddFunction("StorageClear", []() // gsc: StorageClear();
 		{
 			Script::ScriptStorage.clear();
 		});
 
 		// PlayerCmd_AreControlsFrozen GSC function from Black Ops 2
-		Script::AddFunction("AreControlsFrozen", [](Game::scr_entref_t entref) // Usage: self AreControlsFrozen();
+		Script::AddMethod("AreControlsFrozen", [](Game::scr_entref_t entref) // Usage: self AreControlsFrozen();
 		{
 			const auto* ent = Game::GetPlayerEntity(entref);
 
@@ -704,8 +714,9 @@ namespace Components
 		Utils::Hook(0x48EFFE, Script::LoadGameType, HOOK_CALL).install()->quick();
 		Utils::Hook(0x45D44A, Script::LoadGameTypeScript, HOOK_CALL).install()->quick();
 
-		Utils::Hook(0x44E736, Script::GetFunctionStub, HOOK_JUMP).install()->quick(); // Scr_GetFunction
-		Utils::Hook(0x4EC8E5, Script::GetFunctionStub, HOOK_JUMP).install()->quick(); // Scr_GetMethod
+		// Fetch custom functions
+		Utils::Hook(0x44E72E, Script::BuiltIn_GetFunctionStub, HOOK_CALL).install()->quick(); // Scr_GetFunction
+		Utils::Hook(0x4EC8DD, Script::BuiltIn_GetMethod, HOOK_CALL).install()->quick(); // Scr_GetMethod
 
 		Utils::Hook(0x5F41A3, Script::SetExpFogStub, HOOK_CALL).install()->quick();
 
@@ -735,7 +746,7 @@ namespace Components
 		});
 
 #ifdef _DEBUG 
-		Script::AddFunction("DebugBox", [](Game::scr_entref_t)
+		Script::AddFunction("DebugBox", []()
 		{
 			const auto* message = Game::Scr_GetString(0);
 
@@ -745,7 +756,7 @@ namespace Components
 			}
 
 			MessageBoxA(nullptr, message, "DEBUG", MB_OK);
-		}, true);
+		}, 1);
 #endif
 
 		Script::AddFunctions();
diff --git a/src/Components/Modules/Script.hpp b/src/Components/Modules/Script.hpp
index dfc486f4..09a63c22 100644
--- a/src/Components/Modules/Script.hpp
+++ b/src/Components/Modules/Script.hpp
@@ -6,26 +6,13 @@ namespace Components
 	class Script : public Component
 	{
 	public:
-		class Function
-		{
-		public:
-			Function(const std::string& _name, Game::scr_function_t _callback, bool _dev) : name(_name), callback(_callback), dev(_dev) {}
-
-			const char* getName() const { return this->name.data(); }
-			bool isDev() const { return this->dev; }
-			Game::scr_function_t getFunction() const { return this->callback; }
-
-		private:
-			std::string name;
-			Game::scr_function_t callback;
-			bool dev;
-		};
-
 		Script();
 		~Script();
 
 		static int LoadScriptAndLabel(const std::string& script, const std::string& label);
-		static void AddFunction(const std::string& name, Game::scr_function_t function, bool isDev = false);
+
+		static void AddFunction(const char* name, Game::xfunction_t func, int type = 0);
+		static void AddMethod(const char* name, Game::xmethod_t func, int type = 0);
 
 		static void OnVMShutdown(Utils::Slot<Scheduler::Callback> callback);
 
@@ -34,7 +21,8 @@ namespace Components
 	private:
 		static std::string ScriptName;
 		static std::vector<int> ScriptHandles;
-		static std::vector<Function> ScriptFunctions;
+		static std::unordered_map<std::string, Game::BuiltinFunctionDef> CustomScrFunctions;
+		static std::unordered_map<std::string, Game::BuiltinMethodDef> CustomScrMethods;
 		static std::vector<std::string> ScriptNameStack;
 		static unsigned short FunctionName;
 		static std::unordered_map<std::string, std::string> ScriptStorage;
@@ -61,8 +49,8 @@ namespace Components
 		static void LoadGameType();
 		static void LoadGameTypeScript();
 
-		static Game::scr_function_t GetFunction(void* caller, const char** name, int* isDev);
-		static void GetFunctionStub();
+		static Game::xfunction_t BuiltIn_GetFunctionStub(const char** pName, int* type);
+		static Game::xmethod_t BuiltIn_GetMethod(const char** pName, int* type);
 
 		static void ScrShutdownSystemStub(unsigned char sys);
 		static void StoreScriptBaseProgramNumStub();
diff --git a/src/Components/Modules/ScriptExtension.cpp b/src/Components/Modules/ScriptExtension.cpp
index 512c4304..b2c7a526 100644
--- a/src/Components/Modules/ScriptExtension.cpp
+++ b/src/Components/Modules/ScriptExtension.cpp
@@ -6,8 +6,8 @@ namespace Components
 
 	void ScriptExtension::AddFunctions()
 	{
-		//File functions
-		Script::AddFunction("FileWrite", [](Game::scr_entref_t) // gsc: FileWrite(<filepath>, <string>, <mode>)
+		// File functions
+		Script::AddFunction("FileWrite", []() // gsc: FileWrite(<filepath>, <string>, <mode>)
 		{
 			const auto* path = Game::Scr_GetString(0);
 			auto* text = Game::Scr_GetString(1);
@@ -50,7 +50,7 @@ namespace Components
 			}
 		});
 
-		Script::AddFunction("FileRead", [](Game::scr_entref_t) // gsc: FileRead(<filepath>)
+		Script::AddFunction("FileRead", []() // gsc: FileRead(<filepath>)
 		{
 			const auto* path = Game::Scr_GetString(0);
 
@@ -78,7 +78,7 @@ namespace Components
 			Game::Scr_AddString(FileSystem::FileReader(path).getBuffer().data());
 		});
 
-		Script::AddFunction("FileExists", [](Game::scr_entref_t) // gsc: FileExists(<filepath>)
+		Script::AddFunction("FileExists", []() // gsc: FileExists(<filepath>)
 		{
 			const auto* path = Game::Scr_GetString(0);
 
@@ -100,7 +100,7 @@ namespace Components
 			Game::Scr_AddInt(FileSystem::FileReader(path).exists());
 		});
 
-		Script::AddFunction("FileRemove", [](Game::scr_entref_t) // gsc: FileRemove(<filepath>)
+		Script::AddFunction("FileRemove", []() // gsc: FileRemove(<filepath>)
 		{
 			const auto* path = Game::Scr_GetString(0);
 
@@ -124,12 +124,84 @@ namespace Components
 			const auto& file = p.filename().string();
 			Game::Scr_AddInt(FileSystem::DeleteFile(folder, file));
 		});
+
+		// Misc functions
+		Script::AddFunction("ToUpper", []() // gsc: ToUpper(<string>)
+		{
+			const auto scriptValue = Game::Scr_GetConstString(0);
+			const auto* string = Game::SL_ConvertToString(scriptValue);
+
+			char out[1024] = {0}; // 1024 is the max for a string in this SL system
+			bool changed = false;
+
+			size_t i = 0;
+			while (i < sizeof(out))
+			{
+				const auto value = *string;
+				const auto result = static_cast<char>(std::toupper(static_cast<unsigned char>(value)));
+				out[i] = result;
+
+				if (value != result)
+					changed = true;
+
+				if (result == '\0') // Finished converting string
+					break;
+
+				++string;
+				++i;
+			}
+
+			// Null terminating character was overwritten 
+			if (i >= sizeof(out))
+			{
+				Game::Scr_Error("string too long");
+				return;
+			}
+
+			if (changed)
+			{
+				Game::Scr_AddString(out);
+			}
+			else
+			{
+				Game::SL_AddRefToString(scriptValue);
+				Game::Scr_AddConstString(scriptValue);
+				Game::SL_RemoveRefToString(scriptValue);
+			}
+		});
+
+		// Func present on IW5
+		Script::AddFunction("StrICmp", []() // gsc: StrICmp(<string>, <string>)
+		{
+			const auto value1 = Game::Scr_GetConstString(0);
+			const auto value2 = Game::Scr_GetConstString(1);
+
+			const auto result = _stricmp(Game::SL_ConvertToString(value1),
+				Game::SL_ConvertToString(value2));
+
+			Game::Scr_AddInt(result);
+		});
+
+		// Func present on IW5
+		Script::AddFunction("IsEndStr", []() // gsc: IsEndStr(<string>, <string>)
+		{
+			const auto* s1 = Game::Scr_GetString(0);
+			const auto* s2 = Game::Scr_GetString(1);
+
+			if (s1 == nullptr || s2 == nullptr)
+			{
+				Game::Scr_Error("^1IsEndStr: Illegal parameters!\n");
+				return;
+			}
+
+			Game::Scr_AddBool(Utils::String::EndsWith(s1, s2));
+		});
 	}
 
 	void ScriptExtension::AddMethods()
 	{
 		// ScriptExtension methods
-		Script::AddFunction("GetIp", [](Game::scr_entref_t entref) // gsc: self GetIp()
+		Script::AddMethod("GetIp", [](Game::scr_entref_t entref) // gsc: self GetIp()
 		{
 			const auto* ent = Game::GetPlayerEntity(entref);
 			const auto* client = Script::GetClient(ent);
@@ -142,7 +214,7 @@ namespace Components
 			Game::Scr_AddString(ip.data());
 		});
 
-		Script::AddFunction("GetPing", [](Game::scr_entref_t entref) // gsc: self GetPing()
+		Script::AddMethod("GetPing", [](Game::scr_entref_t entref) // gsc: self GetPing()
 		{
 			const auto* ent = Game::GetPlayerEntity(entref);
 			const auto* client = Script::GetClient(ent);
diff --git a/src/Game/Functions.cpp b/src/Game/Functions.cpp
index 6cb56a3d..0a04d18f 100644
--- a/src/Game/Functions.cpp
+++ b/src/Game/Functions.cpp
@@ -272,6 +272,7 @@ namespace Game
 
 	Scr_AddEntity_t Scr_AddEntity = Scr_AddEntity_t(0x4BFB40);
 	Scr_AddString_t Scr_AddString = Scr_AddString_t(0x412310);
+	Scr_AddConstString_t Scr_AddConstString = Scr_AddConstString_t(0x488860);
 	Scr_AddIString_t Scr_AddIString = Scr_AddIString_t(0x455F20);
 	Scr_AddInt_t Scr_AddInt = Scr_AddInt_t(0x41D7D0);
 	Scr_AddFloat_t Scr_AddFloat = Scr_AddFloat_t(0x61E860);
@@ -313,6 +314,8 @@ namespace Game
 
 	SL_ConvertToString_t SL_ConvertToString = SL_ConvertToString_t(0x4EC1D0);
 	SL_GetString_t SL_GetString = SL_GetString_t(0x4CDC10);
+	SL_AddRefToString_t SL_AddRefToString = SL_AddRefToString_t(0x4D9B00);
+	SL_RemoveRefToString_t SL_RemoveRefToString = SL_RemoveRefToString_t(0x47CD70);
 
 	SND_Init_t SND_Init = SND_Init_t(0x46A630);
 	SND_InitDriver_t SND_InitDriver = SND_InitDriver_t(0x4F5090);
diff --git a/src/Game/Functions.hpp b/src/Game/Functions.hpp
index 86b24536..ee0d4d0c 100644
--- a/src/Game/Functions.hpp
+++ b/src/Game/Functions.hpp
@@ -645,6 +645,9 @@ namespace Game
 	typedef void(__cdecl * Scr_AddString_t)(const char* value);
 	extern Scr_AddString_t Scr_AddString;
 
+	typedef void(__cdecl * Scr_AddConstString_t)(unsigned int value);
+	extern Scr_AddConstString_t Scr_AddConstString;
+
 	typedef void(__cdecl * Scr_AddIString_t)(const char* value);
 	extern Scr_AddIString_t Scr_AddIString;
 
@@ -669,7 +672,7 @@ namespace Game
 	typedef const char*(__cdecl * Scr_GetString_t)(unsigned int index);
 	extern Scr_GetString_t Scr_GetString;
 
-	typedef unsigned int(__cdecl * Scr_GetConstString_t)(unsigned int index);
+	typedef scr_string_t(__cdecl * Scr_GetConstString_t)(unsigned int index);
 	extern Scr_GetConstString_t Scr_GetConstString;
 
 	typedef const char*(__cdecl * Scr_GetDebugString_t)(unsigned int index);
@@ -705,7 +708,7 @@ namespace Game
 	typedef void(__cdecl * Scr_ClearOutParams_t)();
 	extern Scr_ClearOutParams_t Scr_ClearOutParams;
 
-	typedef void(__cdecl * Scr_RegisterFunction_t)(scr_function_t function);
+	typedef void(__cdecl * Scr_RegisterFunction_t)(int func, const char* name);
 	extern Scr_RegisterFunction_t Scr_RegisterFunction;
 
 	typedef bool(__cdecl * Scr_IsSystemActive_t)();
@@ -738,21 +741,27 @@ namespace Game
 	typedef int(__cdecl * Script_CleanString_t)(char* buffer);
 	extern Script_CleanString_t Script_CleanString;
 
-	typedef char* (__cdecl * SE_Load_t)(const char* file, int Unk);
+	typedef char*(__cdecl * SE_Load_t)(const char* file, int Unk);
 	extern SE_Load_t SE_Load;
 
-	typedef char* (__cdecl * SEH_StringEd_GetString_t)(const char* string);
+	typedef char*(__cdecl * SEH_StringEd_GetString_t)(const char* string);
 	extern SEH_StringEd_GetString_t SEH_StringEd_GetString;
 
 	typedef unsigned int(__cdecl* SEH_ReadCharFromString_t)(const char** text, int* isTrailingPunctuation);
 	extern SEH_ReadCharFromString_t SEH_ReadCharFromString;
 
-	typedef char* (__cdecl * SL_ConvertToString_t)(unsigned short stringValue);
+	typedef char*(__cdecl * SL_ConvertToString_t)(unsigned short stringValue);
 	extern SL_ConvertToString_t SL_ConvertToString;
 
 	typedef short(__cdecl * SL_GetString_t)(const char *str, unsigned int user);
 	extern SL_GetString_t SL_GetString;
 
+	typedef void(__cdecl * SL_AddRefToString_t)(unsigned int stringValue);
+	extern SL_AddRefToString_t SL_AddRefToString;
+
+	typedef void(__cdecl * SL_RemoveRefToString_t)(unsigned int stringValue);
+	extern SL_RemoveRefToString_t SL_RemoveRefToString;
+
 	typedef void(__cdecl * SND_Init_t)(int a1, int a2, int a3);
 	extern SND_Init_t SND_Init;
 
diff --git a/src/Game/Structs.hpp b/src/Game/Structs.hpp
index 61f92706..8c4e9523 100644
--- a/src/Game/Structs.hpp
+++ b/src/Game/Structs.hpp
@@ -20,13 +20,30 @@ namespace Game
 	typedef vec_t vec3_t[3];
 	typedef vec_t vec4_t[4];
 
+	typedef unsigned __int16 scr_string_t;
+
 	struct scr_entref_t
 	{
 		unsigned __int16 entnum;
 		unsigned __int16 classnum;
 	};
 
-	typedef void(__cdecl * scr_function_t)(scr_entref_t);
+	typedef void(__cdecl * xfunction_t)();
+	typedef void(__cdecl * xmethod_t)(scr_entref_t);
+
+	struct BuiltinFunctionDef
+	{
+		const char* actionString;
+		xfunction_t actionFunc;
+		int type;
+	};
+
+	struct BuiltinMethodDef
+	{
+		const char* actionString;
+		xmethod_t actionFunc;
+		int type;
+	};
 
 	enum XAssetType
 	{
diff --git a/src/Utils/String.cpp b/src/Utils/String.cpp
index 3dbca5fa..223334a7 100644
--- a/src/Utils/String.cpp
+++ b/src/Utils/String.cpp
@@ -97,12 +97,13 @@ namespace Utils
 
 		bool StartsWith(const std::string& haystack, const std::string& needle)
 		{
-			return (haystack.size() >= needle.size() && haystack.substr(0, needle.size()) == needle);
+			return haystack.find(needle) == 0; // If the pos of the first found char is 0, string starts with 'needle'
 		}
 
 		bool EndsWith(const std::string& haystack, const std::string& needle)
 		{
-			return (haystack.size() >= needle.size() && haystack.substr(haystack.size() - needle.size()) == needle);
+			if (needle.size() > haystack.size()) return false;
+			return std::equal(needle.rbegin(), needle.rend(), haystack.rbegin());
 		}
 
 		int IsSpace(int c)
diff --git a/src/Utils/String.hpp b/src/Utils/String.hpp
index 92b8b0dd..51012e8a 100644
--- a/src/Utils/String.hpp
+++ b/src/Utils/String.hpp
@@ -77,10 +77,10 @@ namespace Utils
 		int IsSpace(int c);
 		std::string ToLower(std::string text);
 		std::string ToUpper(std::string text);
-		bool EndsWith(const std::string& haystack, const std::string& needle);
 		std::vector<std::string> Split(const std::string& str, const char delim);
 		void Replace(std::string& string, const std::string& find, const std::string& replace);
 		bool StartsWith(const std::string& haystack, const std::string& needle);
+		bool EndsWith(const std::string& haystack, const std::string& needle);
 
 		std::string& LTrim(std::string& str);
 		std::string& RTrim(std::string& str);