By connecting several data points, we can estimate that he is somewhere between 33 and 35 years of age. He currently lives in Sioux Falls, the most populated city in the American state of South Dakota. SDGuy1234’s real name is Brian Templeton. If you haven’t yet watched SD Guy playing slot machines,then I would urge you to get over to YouTube and subscribe, for you are going tobe entertained by his ramblings and actions as he is playing all manner ofdifferent slots, and to be fair he is a great guy and one many slot players doenjoy watching play.