Unchained Rogue

I was reading about different classes and unchained rogue kept popping up, but when I go to character creation on Pathfinder: WotR on my ps4 , there is no class called unchained rogue. Despite scouring the internet I couldn't find an answer as to why this is, is this strictly a ttrpg thing and not a game console thing? What am I not understanding?

:EDIT: I got my answer thanks to Smirking_Knight