Hello, readers of this discussion, I found a secret room in the basement (the path to it will be below) before updating the map, there was really nothing in it except the plot in the form of a note. After that, a newspaper insert appeared about the missing children (fnaf lor), but for what it's all written it's because of the animatronics drawing "abomination" consisting of several parts of classic animatronics (Freddy, Foxy, Chica, Bonnie, G. Freddy) and Spring Bonnie.
Who knows what it is?

(Creators, if you are reading this, then write it just an Easter egg or something more?)

Path: start at the entrance to fnaf 2 there will be a division into 2 pizzerias you need to go to the office of a vintage pizzeria, there will be a plush Bonnie on the drawers, next to a glowing card, to the left of the card is the door to the basement go there, we reach the end of the corridor with yellow lines, open the door and go to the door at the end of the corridor, go left to the nearest door (not in the next corridor), we see a wall with a brick tab, break and insert the card into the slot and the door opens, we go in and find the newspaper and the note described earlier, then behind the broken door we find the drawings of FNAF 5 and on the table there will be a drawing of the "abomination"

sorry for the mistakes, I'm writing through a translator.