no, anime is different from games really. anime contains mostly informal stuffs, which is pretty twisted compare to the correct grammar. but games, while they do have some of those stuffs, like "disasterific" (guess what game without googling the word) the item descriptions, the monologues, the story telling and the biographies, they are all like a book basically.

how you use informal language is extremely different in different languages.
in vietnamese, sarcasm is usually used for insults. not jokes.