That's almost certainly
HoneySelect.
Same as games like
The Headmaster and
Pale Carnations.
In the right hands (and with the right mods), it can create some very impression images. For the rest of us, it's merely mediocre. Whilst it's much easier to create BAD scenes with Daz3d - it's also possible to create much more impressive scenes with Daz3D too. So if you're good with Daz3D and have a photographer's eye - Daz is the better choice... if not, Honey Select is the path of least resistance.
There's also
Honey Select 2 - but as far as I'm aware, it isn't as widely used for games, since Honey Select has a much larger set of mods
. (or at least, that's my assumption).