Consider this a love letter to this game.
MAJOR SPOILERS IN THIS COMMENT !!
I like to put every game on a scale from asexual to sexual, most games are a 0, maybe 1, suggestive at MOST, and most NSFW games are a 9 or 10, outward smut. That said, I tend to think that NSFW game community lacks 5s, 6s, and 7s. This is that game, and not only is it amazingly written, with near perfect characters, good endings, and an easy 10/10* score (I'll get back to that), it dosen't shove porn in the form of an executable down your throat. Now, there's nothing wrong with extremely smuty gamed, but there's something to be said for characters being more than tools to lead into H-Scenes.
Now, about that 10/10 score, the one thing I disliked. The eyes. There is a major mechanic in the story about animatronic eyes, each color meaning a different thing. I basically only remembered red, meaning controlled by Afton. The eye colors are never reiterated, and are very forgettable, especially blue, which if im not wrong is only used once or twice in the true ending, if at all. Due to this major mechanic being scuffed in introducing, I'm giving the game a 9.5/10. And mind you, the sequel is everything this game did good, and none of the slight issues.
ALSO, having masc and fem character choices is amazing, and the polycule with Lexy and Zero is absolutely amazing. Every character having their animatronic and human personality is super wholesome too, even if not all of them are utilized too much.