Less important than "what games require safety tools" is the question "which groups and in which social contexts are tools needed"? There's no game so anodyne that it can't be used to hurt someone.
Exactly - I can play any game with my best buds and we're fine because we know each other so we'll. Games with strangers, con games, for example, need safety tools because not everyone knows each other.
Content warnings may often suffice for heavily GMed games.
