private Boolean IsGameRunning()
    {
        Process[] game = Process.GetProcesses();
        foreach (Process process in game)
        {
            if (process.ProcessName.Contains("GameWindow"))
            {
                return true;
            }
        }
        return false;
    }

if (IsGameRunning())
            {
                Do stuff
            }
            else
            {

                Status("Waiting for game to start");
            }