Begin Rant
Every game good or bad doesn't matter except for one question, do you find entertainment in it? Morrowind, Yes. Oblivion, Yes. Skyrim, Yes. In order of how I like them, Morrowind Most, Skyrim Second, Oblivion Last. Daggerfall I never got past the starting dungeon.
How can that be? BLASPHEMY!!! OFF WITH HIS HEAD!!!!
I'll explain it then: Morrowind wasn't the greatest technically. Yes, most fights consist of being chased around with a sword or an axe or a guy standing around flinging spell and arrow at you. Yes the graphics are a polygonal mess of a bygone era of programming. Yes, fighting is broken when random chance dictates if you hit, dodge or critical chance. But I enjoyed it. It's a massive, open, diverse world with much to explore. Nearly every character in the game lives with some kind of purpose, be it to kill, take missions from, buy from, learn from, or give character to the world. It's inventive, explorative, diverse, there's a lot to see, a lot to love, and it builds on your persistence, rewarding you with caves to find, secrets in every corner, a story from every single creature that exists on the map, and I love every minute of it.
Skyrim, yes, I ranked it lower than Morrowind. It's a very deep game. It's a very fleshed out game. I love the re-tooling of magic, the narrowed focus of skill branch, ability, combat, so forth. But the world is very large, it requires a lot of patience. I didn't get my first horse in the game for 20 hours or so when I stole it as part of a mission. Unlike Morrowind, this game pits you into a world that hasn't a focus hanging over it. You aren't given a sense of direction minus the knowledge of a civil war, and with how much I played I still don't know if I became a part of the main quest or not. Is my quest to end the civil war? Is it to hunt down the dragons zipping across the skies? Is it to follow and fight with the last remaining Blades? Morrowind tells you something and holds something over your head from the beginning, that you're a selected prisoner born to uncertain parents on a certain day. Terrible dreams haunt you, and the world speaks of the possibility of a Niravine, the re-incarnation of a dark elf hero of tribal society. In this game, nope, you're a man who can kill and eat dragon souls, you know this from the near-start. Good! Now what do I do with this power? Along with that, while the creatures in the world, and the society is unique in many ways, the cities, the towns, the people, the lifestyle, so forth, the map itself isn't that special. There's open fields, a lot of mountains, forests in the west, snow in the North and East and Borders. It's an open world, but it doesn't hold the same surprise and mystery of stepping into a world where mushrooms grow like trees, a single mountain spews toxic ashes across the world and lava spins like rivers. Don't get me wrong, it's a good game, a very well structured game, but I didn't get pulled in like I did in Morrowind.
Oblivion, I will not call bad. It was experimental, a tweak of what was done with Morrowind. It refined combat, reduced the options between weaponry. It gives you a story and a mystery like Morrowind does, you are the sole witness to the death of a king. The main story is easy to find, and in fact is encouraged for you to find straight away. But it's too much too quickly. As a hearty, practiced level 10, killing vampires and throwing lighting bolts with a talent of archery that can shoot someone's testicles off at 100 yards, collect the same arrow, and do the same to another guy coming from over the hill like the magical STD fairy, and Listener for the Black Hand, I go in, I go to find Juaffe, I go to find the kid in a destroyed city, and they just wipe the damn floor with me! The difficulty ramps up a little quickly in terms of the main story, and part of this is of course that the enemies actually are adjusting and changing based on your level. Your character's ability should be at the point to reflect it, but without any change to the difficulty settings they pressure a little too hard when you have to take down 5 Clanfears in an open area with just your sword, and a dremora warrior chasing right behind them. The portals are the same way, areas that will wipe the floor with you unless you run yourself up to high levels, high spell proficiencies and talents in archery, magics and melee. The main story just isn't fun. The fun of the game comes from all the optional stuff in the game, from being the lord of thieves while running the warrior's guild to running the black hand. Help the farmer and his sons to take back their land, run back to the bar to get your reward, then when both sons are outside, shoot them in the head, get a visit from the black hand and use that as an excuse to become a talented assassin. Find yourself south, kidnapped to play a game of cat and mouse for your life in an unfamiliar place. Find the secret of a magical book, that offers you a spell that will try to kill you the first time you summon it. Find yourself in a town populated entirely by cat folk, then help a dremora god convince them that the end of the world is coming, first by attracting an army of mice, plus a couple other things, and then the god himself will fuck up the entire world around them for fun. And your reward is a staff, that turns ANYTHING into ANYTHING else! Point it at a rat, suddenly you have a horse. Point it at your horse, now you have a demon. Point it at a demon, get a bigger demon! Point it at a human, he's a mud crab! Find yourself in a world created purely inside a canvas, made by an artist who was left a tool that let him ENTER his painting and create the world by hand from the inside. The fun comes from finding it for yourself, not by giving it to the story. And while it's a more proficient game than Morrowind, it's weaker than Skyrim in terms of design. And it does the worst in trying to draw you in, the world somewhat plain all over, except for the several billion crypts and dungeons that will stick themselves up on your map.
In short, the game, good or bad, doesn't matter, it matters what enjoyment you gather from it, and in this case I found enjoyment to be had with all of the titles. I'll say Morrowind gave me the most fun, but none of them are really bad games regardless.