It's merely a choice made by developers and a very different approach to the art. It's not because some games have better graphics than other that they're necessarily more expensive. You can find realistic sex games for free And if the adult gaming industry took some time to join the fun, more and more developers are proposing sex games in VR that not only bring you actual 3D but they add interactivity through the controllers, allowing you to play, touch, squeeze, finger, fuck and so on. If you own a VR headset or you've tried one in the past, then you know how good looking and realistic some VR games can be. Virtual Reality by definition will give you that extra edge in terms of fidelity to the real thing. But if you're looking for the next step of realism then you always try VR porn games. Some of the most realistic porn games actually are visual novels that make a great use of environment and 3D character models by including fully animated sex scenes and close ups. While some people prefer hentai Japanese style for adult games, there is nothing more immersive than a story featuring some characters that look almost real. There are different styles of graphics for video games, but in porn games they are mostly separated in two categories: cartoon (or 2DCG) and realistic (or 3DCG).
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