Complex sentence: Today, at 65, Gold is one of the oldest online gamers, and participated in the production of Quake 2,, Necronomicon, and other online first-person shooters, and was Number Four on the Ladder in Diablo II in 2006.
Split into simpler sentences: Today, at 65, Gold is not only one of the oldest online gamers, but has participated in the production of Quake 2,, Necronomicon, and other online first-person shooters. He was Number Four on the Ladder in Diablo II in 2006.