You definitely need to have gigabytes of content installed on your computer but beyond that I have no clueDue to the content in the thread, I presume, AdSense is recommending Final Fantasy XIV "online". It also appears to be trying to show me a PS5/PS4 version. I dunno, I'm not a gamer.
My question is, can you play that online version - or does it require software on your computer, such as anti-cheat stuff? Are the assets fully online or do you need to run something locally? I rooted around at the linked site, but learned nothing.
I know some games are completely online, you need only a browser to run them. That seems a bit clunky for something like this (I'm familiar with the series) but I guess it'd work, though I'd think it's asking a whole lot from the browser. But, I have no idea the current state of the tech. The last gaming I really did was Fallout 2. Well, I did play KoL for a while, but that wasn't so much gaming as it was just pressing buttons to kill time.