Millisecs() is taken from when the system is booted so is not dependant on your game. Because it is held in an int the value wraps after about 25 days (I think).
That's the only thing I can think of that is dependant on how long a machine has not been rebooted for (other than memory leaks)
That's the only thing I can think of that is dependant on how long a machine has not been rebooted for (other than memory leaks)