Interest Stacks

Original anime, adapts chapters 1 to 197 of the manga.

The anime has few fillers and overall is faithful to the manga, however it does not adapt the manga's ending, and episodes 97-101 are fillers.

So if you want to see the ending in the manga, after the anime, read from chapter 198(Tankobon volume 23 and Kanzenban volume 18).

Recap of the first 20 episodes with additional scenes.

Watch after episode 20.

Original Movie 1, with a story not based on the manga.

The plot of this film is remembered and relevant in the mini filler arc of episodes 47-49.

Watch after episode 20.

Original Movie 2.

The game of this movie happened in the manga, but just as a mention, the whole plot of the movie is not based on the manga.

In the anime, this movie takes place during episode 36, more precisely after minute 07:16.
But don't watch it after episode 36 because it recaps this movie and its game result.

Watch after minute 07:16 of episode 36 and then continue the episode, or watch after episode 35.

Original Movie 3, It's not based on the manga.

Watch after episode 60.

Original Movie 4(In my opinion, this one is worth watching),
It's not based on the manga.

Watch after Movie 3 or after episode 60.

The movie "adapts" chapters 223 to 276 from the manga.

A film that changes the perspective given in the manga.

Both the manga and this movie offer different perspectives and additional scenes, they are two ways of seeing this game, neither of them cancels them out or replaces them.

So I recommend both the ending of the manga and this movie.