The game is 10+ years old, and most of the video in the older stuff is vhs quality.
The huge download is a waste as it is mostly garbage.
The original AIML (artificial intelligence markup language) was way ahead of its time, back in the day.
In addition to being sexy, obeying your every wish to the best of her ability, and knowing her place in the kitchen,
with a few simple tweeks, you virtual girlfriend (virtual assistant) can do a variety of tasks for you
interfaced with your calendar, microphone, home automation hardware, and internet...
you could setup your assistant to respond to your voice commands, ask her to wake you up, remind you of appointments, turn on and off lights, adjust your thermostat, lock/unlock your door, etc. (siri, okgoogle, amazon echo, are all built on this same technology)
You can choose whether or not she gets jealous of you seeing other girls.
Most people don't like the huge download, and it's not required. You can download the engine, choose a personality, and install only your favorite girl. Then have missionary sex with her forever, if you want. But most people get tired of the monotonous monogamy, and choose to install updates, and add new girls. It's not pokemon, you don't have to fuckemall.
once you're familiar with how it all works, you can get yourself video editing program, and make your own girlfriends for the game.