Where any decision stands on a range between good and bad is a subjective judgement.
https://en.wikipedia.org/wiki/List_of_banned_video_games_in_...
If it exhibits short term negative effects, it'd be obvious what to do.
In addition to video games we also censor television, books, porn, the internet and music. Slippery, slippery slope... it's now illegal for doctors to talk about the facilities and treatment they observe working with attempted-illegal immigrants detained indefinitely by the AU government.