It's more that certain words should be red flags to get you to think in a certain direction rather than guiding you down that path. "At least" is a great example of this since it is a great chart signifier but not a foolproof one.
If you look at the games menu in the app you can see all the categories in one place. Best thing to do is just foolproof those games and watch the videos.
Fool proofing will further increase your ... . I’d also recommend supplementing fool proofing by developing a system ... , after the first time I foolproof a game, repeat it again ...