Head Canon

Idk if I'm the only one who feels or thinks this way about the games but it's my personal head Canon, even tho the games are completely original stories originally started by Paul Dini, that they are continuations of Batman: The Animated Series taking place much later than the events of the show given that Conroy and Hamill reprise their roles and how much Batman and Joker appear "aged" as opposed to their TV counter parts.