Greatest, most ambitious Zelda ever.
Hyrule is massive; this is one of the biggest world ever seen for an action adventure game and secrets lurk in every corner of the game world. Each of the dungeons consist of extremely well-designed puzzles that sets the player thinking, while well-placed enemies give this game a well balanced pacing.
While graphics looked more consistently great for resident evil 4, Twilight Princess has an art style unmatched by several games in the market. The world of Hyrule is beautiful, but the art style of this game stands out most when player gets to the twilight realm. Colors in the twilight realm are heavily saturated and seem to give off a glow. Particles littered the entire realm; at a time where technical superiority seems to be everything, the fantastic art in Twilight Princess serves to remind us that with good art, a game world can just be as engrossing and interesting.
While the combat system is polished up (each sword slash feels great, each special moves executed with ease), the battles in the game hardly provide a challenge, and that includes the boss battles as well. That said, the boss battles are one of the most epic battles seen in the whole of the Zelda series. Besides, the battles, while short, are vastly varied and provides great fun and jaw dropping moments.
As far as story goes, Twilight Princess is the best in the series in terms of presentation. Never had I seen so many cutscenes in a Zelda game before. Nintendo certainly took effort into making Zelda more cinematic; which results in a more epic feel for the game.
However, saved for certain character(s), the character development in Twilight Princess has lots of room for improvement. If you have ever played Zelda games before, you'll be disappointed by how shallow some of the vital characters are.
Where audio is concerned, Twilight Princess contains the same forms of sound effect you'll expect from the series (Link's battle cry, that is). Dialogues are depicted in text. While several Zelda veterans are probably comfortable with this form of presentation, one can't help but wonder if Nintendo should go with the flow and used voice-overs instead.
The music compositions in this game is wonderful and memorable. The music is also dynamic and changes with regards to the situation you are in. The best example would be the boss battles. However, several of the music are actually MIDI based, so they tend to feel a little flat, though not unpleasant.
In summary, The Legend of Zelda: Twilight Princess is a must own title. If you are a gamer, you have to play this title. Expect to have at least 40 hours of non-stop fun.