What? I have never heard that you cannot play games which are not on the latest version. The only game where that might apply is Fortnite as you could play it while being banned (probably?) and you would need the current update
I had Mario Kart installed on FW5.1. When I updated to FW6.0, it forced me to download an update for Mario Kart before I could play, even though I was in airplane mode. It's definitely possible.