The best examples are related to the magic and alchemy systems: you can break the game in many different ways, the classic one being to use fortify intelligence potions to boost your alchemy skill and then make new fortify intelligence potions until you have effectively infinite skill and extremely valuable potions. You can also use levitation and chameleon spells to access areas or items early.
It's not a /very/ emergent game but it has more to offer than skyrim. The speedrun completes in something like 10 minutes using a variety of exploits.
I may be wrong on this but I also feel like Skyrim lacked the kinds of magical items Morrowind had that basically required you to think up clever magical hacks to make them useful eg Boots of Blinding Speed
Yeah that's true - morrowind has game breaking items like boots of blinding speed, where you need to abuse the games mechanics to make them actually useful. Same with the jumping scroll you find early on - if you just use it, you're gonna die from fall damage.
By the end of my last (vanilla) playthrough I could fly through the sky like superman at 100mph, you really can't do things like that in skyrim.
I had a levitate spell, and fortify jump + slowfall + boots of blinding speed. If I could run and jump I did, otherwise I used levitate because it was slower. Also because I was Telvanni and they really can't do without levitate!
Oh yeah haha I don't think I really used it on enemies, on my destruction mage I just levitated myself out of harm's way and used fire spells to cheese melee enemies.
Emergent behaviour is higher order behaviour that is created by interaction between rules. The rules "higher INT = better potions" and "fortify INT potion increases INT" are the rules that interact to form a positive feedback loop of infinite INT. That's emergence.