Okay, so I'm going to keep this as spoiler free as I possibly can.
I give it a solid 8.5/10 in terms of cinematic stuff. Like, I really liked how it was put together and all the little details. Casting was really good too. They definitely put in a lot of effort to make this movie happen which I find to be pretty respectable. I kind of wanted it to be a lot more gorey and graphic, like I pictured the movie to be. And also, no, there isn't some "Together, we are FNAF!" bs. It wasn't corny as hell.
When it comes to how accurate it is LORE WISE.... 4/10. Like, I'm being kind of generous. It wasn't accurate to the lore of the game. Like, I found myself being confused at some points of the movie and I have played the games and KNOW THE LORE. Like, that's not good! It was well-executed though so I don't totally hate it. I also understand the script had to be written in a different perspective. (Since, we play the game in first person).
The animatronics were super cool and well-made, looked exactly like the games almost as if they were brought to life. So, I really liked that as well. I honestly really liked it and was at the edge of my seat. (Though, the jumpscares didn't scare me.)
What I do wish is that the jumpscares were a lot more loud and scary. Like, enough to prick tears.
Overall, solid movie. Would watch again.