I asked that question in a search as I don't have a clue.
https://search.brave.com/search?q=how+do+nda's+in+video+game+industry+differ+from+the+movie+industry&source=desktop&summary=1&conversation=9ce44269b56f2735f925d7
Being Discord it is possible to come across a gamer on Discord possibly making this a conversation rather than a bunch of people unable to comment due to lack of info know about the Video Game industry.
Why is the question important? Take the mention on the set of X-Men movies how reading comics on set was prohibited. Mentioning that didn't cause anyone to get sued, yet in the Video Game industry it would, if it was under NDA. More often in Video Games there's "leaks" or "anonymous sources" which aren't reliable and due to the social media of today unproven information is promoted as fact. This could result in more harm than good to the Video Game industry. Compared to the movie industry where people are able to discuss topics more freely about the how a movie was made, and that search indicates it's primarily the story and the studio's property that's protected.
Sure it's an odd topic, but me not having a clue about NDA's from either side and how they differ, I'm curious of that and what one industry could learn from the other.