This version aged quite a lot and I know that after still getting with the gameplay it's still a buggy mess with the mechanics, like half of the spells not working. If you want to play out of curiosity and check how the original looked like compared to much better versions it's still worth the time for history sake. But nothing more.
One of my favorite Final Fantasies, a janky, buggy mess I can always go back to. It combines the harsh dungeon crawling RPG action and party making over 80s RPGs with the larger than life time-travel-and-sci-fi plot of... well, final fantasy. Great stuff. Great to have a final fantasy you can have a "run" of.