this is some lore to my horror games (the sounds used in this project are not mine they are scott cawthons fnaf i take no credit for the sounds)
like fnaf 3 there are 9 buttons and if you press them in A secret keypad exists in the wall tiles to the right of the player above the vent monitor. Enter the code "3-9-5-2-4-8" and the coin will appear on the vent monitor. Game: Five Nights at Freddy's: Help Wanted