The Legend of Zelda: Breath of the Wild hands down. That game was an experience like no other, the joy of exploring Hyrule, stumbling on Koroks, shrines, deviating from your intended destination because you saw something in the distance can't be beat.

I never thought I'd say this (especially since I'm not a TES fan), but as much as Skyrim is a letdown compared to older TES games (especially Morrowind and Daggerfall), due to sheer amount of different ways you can play it, it is still better game than BotW (personally rating them 7/10 and 7.5/10 respectively).

Hands down The Witcher 3, it is a masterpiece.

TLOU and The Witcher 3 coming at second

I don't know about this, Breath of the Wild can be pretty diverse in the ways you decide to tackle various enemies and challenges, specially once you master the peculiarities of terrain and weather and realize how much damage the runes can inflict. Imagine if you could glide to strike a dragon, or shout a boulder down on your enemies in Skyrim.

Coming from pen&paper RPGs I can imagine all sort of crazy stuff. Honestly, I find both BotW and Skyrim to be very limited games, each in its own way, but I find Skyrim, due to it being RPG, to have better replayability...and much more content, while we're at it. Ultimately, IMO, they are just decent games, and that's about it.

I finished the main story today at exactly 50 hours played. I still don't understand what is so good about it - the controls are too clunky for a 2015 game, the combat is serviceable, the story is meh.

Having just finished Witcher 3 it definitely ranks among my top 10 games of the decade. 

My only real issue was that the last 3-4 hours or so before the final battle kinda dragged, and BOTW had kinda spoiled me in terms of being able to teleport anytime and the world feeling less restricted, but that's not the game's fault as it was made in the pre-BOTW era.

Still a great example of a rich and fleshed out game world with tons to do, most of which is very fun and well made.

This might not be adding much to the conversation, but I put Skyrim and Breath of the Wild at my #2 and #3 slots, respectively. No reason we can't enjoy both, they don't have to be in direct opposition of one another. 

Skyrim was just too buggy for me. That and the melee combat felt very stiff and unsatisfying. I know it's a popular favourite but honestly I never felt it was that good a game.