Holstein Girls does a great job at delivering on the breast expansion and lactation subjects. It gets a bit dull due to nearly all scenes being just a static image of a girl over a background, making it visually very limited. Still, quality work was dedicated to making those images look good, and appealing. There are enough girls, and enough of a varied plot for each, that I found myself wanting to explore the next step with each just to find out what happens. Some of the stories are very erotic, while others feel a little too limited by the goal to be pornographic. I'd love to see what the talented CowgirlDev can do with a more ambitious, story-rich, and visually stunning game.