Yeah, the look and texturing can be hard to get over. I mean, OPM and Higurashi got really big despite their initial art style. In fact, all the mistakes made them quirky enough to endear themselves to the consumer, for one. They only got redrawn by other artists after they got enough traction to begin with. I also remember the art of Wadanohara and the Sea (mostly the shark guy) fondly.
But I cannot, for the life of me, immediately recall any AI game nor its art. I feel that's the price of having perfect art that doesn't have distinction in its form.