What's the oldest CM/FM game you're currently playing?

I'm currently playing Championship Manager 97/98 on my Steam Deck, into my second season at United. Won the league and Champions League in my first season but am currently struggling in my defense of the league, in 8th after a poor start, with Schmeichel and Irwin leaving after refusing new contracts. Love the feel and aesthetic of this game. The background photos are so nostalgic and the stadium photos gives each match a different feel and atmosphere. Anyone else currently playing an old version?