FNAF Announcement says:

Why not implement an age appropriateness rating system on Scratch?
Everything shared in our community should be appropriate for all ages. Any type of age restriction placed on a project by the Scratch Team, community members, or project authors isn’t aligned with this philosophy.

Golden_Freddy_1010 wrote:

Scratch, I'm not trying to be mean but maybe you should let fnaf back in and also add a age vertificator so little kids wont play it. please…

Golden_Freddy_1010 wrote:

yea but then the original ones and “play as animatronics” are gone!

The FNAF Sticky wrote:

Will all Five Nights at Freddy’s content be unshared?
Nope. We’ll only unshare projects that violate our Community Guidelines. For instance: An emulation of the game containing all of the elements described above are not okay. On the other hand, a Freddy Fazbear dress up game? That’s probably okay.

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LOVES_HARRY_POTTER wrote:

It was a good decision to remove fnaf because there were little kids being scared by it, and its lowered scratches reputation.