In your opinion, which game is harder to beat.
In my opinion, it would have to be Twilight Princess, but that's probably because I know OoT like the back of my hand...
I think the Water Temple in OoT is quite challenging. The first time I played through it I wanted to cry. I think it's hard because of the water level changing and the fact that you could easily be disoriented. Also, there were a ton of small keys, which is quite annoying if you don't know where...