Halfâgiants mature at about 24 years of age and can live about 170 years. In the past, they were much larger, but after millennia of inter-breeding with other races their height has decreased somewhat from about an 11 foot average to between 8 1/2 and 9 1/2 average today. Their stats remain the same but these smaller descendants are also called âLesser-Giantsâ.