While genre purists will claim that the field is generally limited to books, one can technically find examples of Lit RPG in any non-interactive genre.
We’ll be looking at this more closely in the article below.
In the US, it's not a project - it's a genre.
The rules are far looser and it's possible to incorporate many more works under the umbrella.
The story must take place in a game, must have a protagonist that is aware of the nature of the game as an outsider, and that it shows some kind of game-like progression.