The Legend of Zelda: Twilight Princess (Japanese: ゼルダの伝説 トワイライトプリンセス, Hepburn: Zeruda no Densetsu: Towairaito Purinsesu?) is an action-adventure game developed and published by Nintendo for the GameCube and Wii home video game consoles. It is the thirteenth installment in the The Legend of Zelda series. Originally planned for release on the GameCube in November 2005, Twilight Princess was delayed by Nintendo to allow its developers to refine the game, add more content, and port it to the Wii. The Wii version was released alongside the console in North America in November 2006, and in Japan, Europe, and Australia the following month. The GameCube version was released worldwide in December 2006.[b] 

The story focuses on series protagonist Link, who tries to prevent Hyrule from being engulfed by a corrupted parallel dimension known as the Twilight Realm. To do so, he takes the form of both a Hylian and a wolf, and is assisted by a mysterious creature named Midna. The game takes place hundreds of years after Ocarina of Time and Majora's Mask, in an alternate timeline from The Wind Waker.
Who is the main character of the Legend of Zelda series?
How many previous games had there been in the series?
Which systems was Twilight Princess made for?
What was the original publish date?
Why was it pushed back?
when was it finally available for GameCube?
Was it available everywhere at that time?
What is the Twilight Realm?
How is it a threat?
How does he try to fight it?
Does it occur before or after Ocarina of Time?
Who helps him?
Is this in the same timeline as Wind Waker?
Link
The story focuses on series protagonist Link
12
It is the thirteenth installment in the The Legend of Zelda series
GameCube and Wii
 is an action-adventure game developed and published by Nintendo for the GameCube and Wii home video game consoles.
November 2005,
 Originally planned for release on the GameCube in November 2005,
s to refine the game, add more content, and port it to the Wii.
Twilight Princess was delayed by Nintendo to allow its developers to refine the game, add more content, and port it to the Wii. 
December 2006.
The GameCube version was released worldwide in December 2006.[b] 
yes
 The GameCube version was released worldwide in December 2006.[b] 
parallel dimension
 a corrupted parallel dimension known as the Twilight Realm.
trit could engulf Hyrule
 tries to prevent Hyrule from being engulfed by a corrupted parallel dimension known as the Twilight Realm. 
takes the form of both a Hylian and a wolf
To do so, he takes the form of both a Hylian and a wolf, and is assisted by a mysterious creature named Midna
after
The game takes place hundreds of years after Ocarina of Time 
Midna.
assisted by a mysterious creature named Midna.
no
 in an alternate timeline from The Wind Waker.