“An Agonizing Game for Nerves” is a science-fiction novel by Denis Deev—the first book in the eponymous cycle. Genre: action fantasy, LitRPG.
By pressing the “Enter” button, you can become anyone. A Warrior of Light, mowing down whole herds of rabbits for shreds of fur and crumbs of experience. Or you can start a career as an Adept of Darkness and try to use necromancy to heal a broken paw on a hatchling. Or you can begin a new life in Fourlands in such a way that your enemies’ hatred becomes your best reward. Shadow will be your only safe shelter. You’ll perform a thousand feats, become a hero of legends, and a leader of all kinds of rankings. But on this path, there’s one serious problem: you’re… not there.