Apollos Thorneauthor : Apollos ThorneApollos Thorne Book SeriesUnderworld - Scorching Sun: A LitRPG SeriesUnderworld - Vampire Gate: A LitRPG SeriesCodename: Freedom: Survive Week OneUnderworld - Through the Belly of the Beast: A LitRPG SeriesUnderworld - Level Up or Die: A LitRPG Series