It's pretty interesting how there seem to be some patterns here. Like gay games having next to no different tags and a certain artstyle, furry and monstergirls rarely having ntr. And with NTR itself you can even recognize it by artstyle choice. By facial expressions, even. It feels like i can gather the statistics and learn something from it, but i'm not a machine or corporation to scroll through thousands of games just to do that.
Indie games are also like a mirror to the developer's very soul, since they're a result of his imagination, and imagination is a result of his whole life's experience. Pretty sure it's should be possible to learn details about person this way, the ones he doesn't even suspect could be learned from simply examining his game. Of course, connections are far from straightforward, i.e. cheery games aren't just made by cheery people, ntr games aren't always made by cucks.