Some of these porn games are sometimes labeled "pov" because they are taking place from the point of view of the player.
Porn games are of course related to hentai games or sex games but they don't limit themselves to a particular kind of graphics.
In more mainstream games like Grand Theft Auto, sex soon started to become more ‘normal’.
Chathouse 3D Roulette is a “Massively Multiplayer Online Virtual Sex Game” (MMOVSG) and is the next big step in the evolution of online 3D sex games!
Porn games are straightforward: it's an interactive porn simulation.
Of course, graphics and position may vary but the idea is always the same: simulate a sexual intercourse with the mouse or the keyboard to make your partner cum.
You will soon move the mouse in every direction ;).
Your goal is so to animate cartoons, 3D characters and pictures to actually make happen that sexual intercourse between two or more people.