Im actually little confused here. Can people make difference here from adult games and porn games. Or for them its all same porn, jerk off content.what's more important than the depth of the mechanics is that they meaningfully integrate with the main idea of the game, which many deep mechanics fail at. whatever you add to the game should support the story or the main idea, not detract or distract from it. in a porn game deep mechanics tend to distract from the main idea, which makes players frustrated and bored when they're forced to suffer through irrelevant or distracting secondary mechanics. doesn't matter how good the mechanic is, if it's not somehow connected to getting pussy it can't hold the interest.
there are exceptions of course, like having resource game mechanics in a brothel game. there you can go deep because it fits with the idea of brothel as means of production. but if you make a brothel game with a flight simulator it's not gonna fit no matter how good your simulator. the mechanic must fit the idea, AND it needs to support it rather than distract.
If i want porn i can watch some videos, but im here for adult games, realy dpnt need jerk off content but some entertainment and time kill for adult person.
Its actually quite weird that its all labeled as games, but actually most content is just visual novels with more or less interactivity.