Digital Rebirth Chronicles

Even the danger of the experimental full immersion technology didn't put him off. It beat living in a nursing home, and it was supposed to let him feel young again...at least until modern medicine and his body gave out.  But there was something wrong with Asgard's Fall. Most of the time, the "gods" running the game didn't act like AIs were supposed to. Some of the players took things too seriously, like they knew something about the game that Noah didn't. Forced to rely on skills he abandoned a lifetime ago and new digital abilities that resemble ancient magics more than modern code, Noah has to unravel the mysteries behind Asgard's Fall. And in doing so, discover an ancient threat that has forced a world long hidden from mankind into the light.