Hello there! I'm not a professional game critic, but I'd like to give you some feedback. This game is an extremely good copy, especially considering it was made in Scratch. I have no complaints about any sort of differences between this and the original, however I did unfortunately find some bugs.
1: Sometimes the game stops responding when you try to start a night, usually problem is around night two to four.
2: Foxy will be more aggressive after holding the closet shut, for example standing up straight and then going into his crouched position or his non-growling face after holding the door closed.
3: I'm not sure if this happens during all nights, but I noticed on night five and six at the game will randomly get stuck on a certain frame after moving. You can still move around, judging on being able to hear the game playing normally behind the frozen screen.
4: On night six, when Nightmare Freddy comes out and you open the hallway door, he won't walk away no matter how long you hold the door shut.
5: During night six the screen and time will start glitching, as it does when Bonnie or Chica are too close, but after checking the bed, the closet, and both hallway doors multiple times and holding them shut, the effect won't stop. There is also a constant breathing sound to go with it.
6: The last bug I stumbled upon was one another player had previously reported, flashing the camera while holding the door gives a look at the nightmare animatronics. It seems it isn't fully fixed, but after trying it a few more times after the first time a second ago, it hasn't shown up again.
All in all, I have spent a lot of my time trying to beat all the nights and I say my time was mostly well spent. The game is good and I'm looking forward to more remakes when you have the chance. Thank you! ^^