I've discovered the LitRPG genre a couple of years ago and have become a real fan. I listen to about 60 litRPG books per year and will be sharing my thoughts, rating and recommendations for audiobooks (and books) for LitRPG genre.
LitRPG is short for a literary role-playing game, is a literary genre combining the conventions of RPGs with science-fiction and fantasy novels. The term appeared around 2013 and was popularized by Aleron Kong with his amazing series "The Land".
In LitRPG you would typically see game-like mechanics, such as levels, experience, skills, progression, notifications, and quests that play a significant part of the story. Genres that use only some of those mechanics are GameLit, Progression, or Isekai.