>>725070148
The timeline of the games from FNAF1 to UCN is as follows.
FNAF4 crying child segments
FNAF World but this can take place really anytime between the crying child segments and FNAF3 (dubious as to if it's even canon or not because it was supposed to tie into the canon of other games but Scott regrets doing that, and considering how many meta elements the game has it more likely than not is not canon)
Emily gets locked out and William Afton axes her a question, Emily possesses the puppet
William Afton axes five kids and stuffs them in suits, the kids possess the suits
FNAF2, during FNAF2 WIlliam decides to go on his murder spree and leaves the dead kids lying on the floor
WIlliam makes the Circus Baby entertainment restaurant and Charlotte gets killed by Circus Baby, possesses her, William shuts down the restaurant before it opens
FNAF4 gameplay segments
FNAF1
FNAF3 William tearing down the animatronics segments eventually getting stuck in the Spring Bonnie suit, turning into Springtrap
SL
Big time skip
FNAF3 gameplay segements
Pizzeria Simulator
UCN