The Artificially Prolonged said:
Skyrim - The game I've the longest in series so I guess its my favourite.
Oh no! It seems you the verb!
OT: I want to play Arena, purely because the difficulty intrigues me and supposedly each time you leave a town or dungeon, the map is randomly generated.
The only two I've played are Oblivion and Skyrim. I'd say it's about a tie.
Oblivion pros:
Guard directions, etc. Little things like that made it feel slightly more fleshed out.
The weapons system and finding them felt less concrete.
It felt like the cities had more in them.
Sean Bean. This makes anything interesting to me.
Skyrim Pros:
Dragons.
Dragon shouts.
Better combat system.
Magic wasn't a little puff ball at the beginning. It was actually useful, then if you didn't level it, became appropriately shit. Same for archery.
Better graphics.
Work system (made it feel fleshed out in a different way)