diff --git a/src/Steam/Proxy.cpp b/src/Steam/Proxy.cpp
index 45fcf5cf..cc647509 100644
--- a/src/Steam/Proxy.cpp
+++ b/src/Steam/Proxy.cpp
@@ -98,14 +98,31 @@ namespace Steam
 		gameID.m_nAppID = Proxy::AppId & 0xFFFFFF;
 		gameID.m_nModID = 0xBAADF00D;
 
-		char ourPath[MAX_PATH] = { 0 };
-		GetModuleFileNameA(GetModuleHandle(nullptr), ourPath, sizeof(ourPath));
+		Interface clientApps(Proxy::ClientEngine->GetIClientApps(Proxy::SteamUser, Proxy::SteamPipe, "CLIENTAPPS_INTERFACE_VERSION001"));
+		Interface clientShortcuts(Proxy::ClientEngine->GetIClientShortcuts(Proxy::SteamUser, Proxy::SteamPipe, "CLIENTSHORTCUTS_INTERFACE_VERSION001"));
+		if (!clientApps || clientShortcuts) return;
 
-		char ourDirectory[MAX_PATH] = { 0 };
-		GetCurrentDirectoryA(sizeof(ourDirectory), ourDirectory);
+		KeyValuesBuilder builder;
+		builder.packString("name", mod.data());
+		builder.packUint64("gameid", gameID.bits);
+		builder.packString("installed", "1");
+		builder.packString("gamedir", "IW4x");
+		builder.packString("serverbrowsername", "IW4x");
+		builder.packEnd();
 
-		std::string cmdline = ::Utils::String::VA("\"%s\" -proc %d", ourPath, GetCurrentProcessId());
-		Proxy::ClientUser.invoke<bool>("SpawnProcess", ourPath, cmdline.data(), 0, ourDirectory, gameID.Bits, Proxy::AppId, mod.data(), 0, 0);
+		std::string str = builder.getString();
+		uint32_t uniqueId = clientShortcuts.invoke<uint32_t>("GetUniqueLocalAppId");
+		if (clientApps.invoke<bool>("SetLocalAppConfig", uniqueId, str.data(), static_cast<uint32_t>(str.size())))
+		{
+			char ourPath[MAX_PATH] = { 0 };
+			GetModuleFileNameA(GetModuleHandle(nullptr), ourPath, sizeof(ourPath));
+
+			char ourDirectory[MAX_PATH] = { 0 };
+			GetCurrentDirectoryA(sizeof(ourDirectory), ourDirectory);
+
+			std::string cmdline = ::Utils::String::VA("\"%s\" -proc %d", ourPath, GetCurrentProcessId());
+			Proxy::ClientUser.invoke<bool>("SpawnProcess", ourPath, cmdline.data(), 0, ourDirectory, gameID.bits, Proxy::AppId, mod.data(), 0, 0);
+		}
 	}
 
 	void Proxy::RunMod()
diff --git a/src/Steam/Proxy.hpp b/src/Steam/Proxy.hpp
index 603fee08..229571be 100644
--- a/src/Steam/Proxy.hpp
+++ b/src/Steam/Proxy.hpp
@@ -131,6 +131,53 @@ namespace Steam
 		std::string getMethodName(unsigned char* methodPtr);
 	};
 
+	class KeyValuesBuilder
+	{
+	private:
+		std::stringstream m_buffer;
+
+		inline void packBytes(const void* bytes, size_t size)
+		{
+			m_buffer << std::string(reinterpret_cast<const char*>(bytes), size);
+		}
+
+		inline void packDataType(uint8_t type)
+		{
+			packBytes(&type, 1);
+		}
+
+		inline void packNullTerminated(const char* string)
+		{
+			packBytes(string, strlen(string) + 1);
+		}
+
+	public:
+		inline void packString(const char* key, const char* value)
+		{
+			packDataType(1);
+			packNullTerminated(key);
+			packNullTerminated(value);
+		}
+
+		inline void packUint64(const char* key, uint64_t value)
+		{
+			packDataType(7);
+			packNullTerminated(key);
+			packBytes(&value, sizeof(value));
+		}
+
+		inline void packEnd()
+		{
+			packDataType(8);
+		}
+
+		inline std::string getString()
+		{
+			return m_buffer.str();
+		}
+	};
+
+
 	class Proxy
 	{
 	public:
diff --git a/src/Steam/Steam.hpp b/src/Steam/Steam.hpp
index 657aa0c7..082a5d9e 100644
--- a/src/Steam/Steam.hpp
+++ b/src/Steam/Steam.hpp
@@ -31,7 +31,7 @@ typedef union
 		unsigned int m_nModID : 32;
 	};
 
-	unsigned long long Bits;
+	unsigned long long bits;
 } GameID_t;
 #pragma pack( pop )