I love the game play with all the varieties of the mask transformations, I love how detailed the side quests are and how they intertwine into the main plot. I love how sinister the villain is with his mass-suicide plot. I love how creepy the music can be. I love how mutated some of the characters look, giving it a twisted fairy-tale look.
I love everything about it. Ocarina is great but this is Zelda unhinged in the best possible way.
Final Fantasy VIII. When I first started playing this game I didn't like it that much. Now I have played through it at least ten times, and each time I discover something new. I never tire of the world setting and find the characters to be rather charming. It's also a very easy game to break difficulty-wise but it gives you so many different ways to play that I don't mind. Still my favorite game and currently playing again on Vita.
I usually have a hard time coming up with top X games lists because I like so many games for so many reasons, but the one that I've always felt comfortable at the very top was Deus Ex. Between the atmosphere, the charming nostalgic late '90s visuals, the music, the myriad of ways to play through it, it's an experience that no other game has nailed quite so perfectly. While a lot of games have gone for that shooter RPG blend, none have really executed on the mixture like Deus Ex.
Seeing as this medium started in the mid to late 70's it would be sort of odd to deem a game my personal favorite of all time. It'd be like proclaiming a 1930's movie or earlier movies as a favorite at that time, while film just started earlier in the 20th century.