Hi Marco,
This is intentional. Now this videogame is released on an episode by episode basis so it is in fact clearer to list them separately. See
https://contribute.imdb.com/updates/guide/title_formatsEpisodic Video Games Episodic Videogames, such as those developed by
Telltale Games, do not fit neatly into any of our existing title types.
In order to avoid duplication of credits we would prefer to list the collected episodes of a season as a single title e.g.
The Walking Dead: The Game - Season 1.
Individual episode titles should be submitted as Alternate Titles with the attribute (videogame episode) to distinguish them.
For example - The Walking Dead: The Game - Season 1 would have akas of 'The Walking Dead: The Game – Season 1. Episode 1: A New Day', 'The Walking Dead: The Game – Season 1. Episode 2: Starved for Help' etc
Individual release dates of these episodes should be listed in a similar fashion, again distinguishing between them with attribute for each episode - in this case (videogame episode 1), (videogame episode 2) etc.
Marco