Football fans rejoice, as EA has today released the demo for Madden NFL 13 on Xbox Live and the PlayStation Network!

The demo lets players relive the 2012 NFC Championship between the New York Giants (w00t!) and San Francisco 49ers, which feature the new Nike-branded uniforms.  The demo also includes a match-up between the Seattle Seahawks and Washington Redskins, while fans will get a first-look at the 3D broadcast booth featuring Phil Simms and Jim Nantz.

EA is also instituting a little giveaway this year, as those who tweet their in-game score with the hashtag #Madden13Demo, will be entered for a chance to win a full copy of the game.  13 total games will be given away over the next 13 days and each winner will take home a VIP kit filled with a copy of Madden NFL 13, a special edition 64GB iTouch, a pair of EA SPORTS headphones, and a Detroit Lions mini-helmet signed by Madden NFL 13 cover athlete Calvin Johnson, Jr.

Additionally, Madden NFL 13 will incorporate Game Face for the first time, letting players use their cameras to put their mugs into the game.  You can read more about the feature at http://www.easports.com/gameface.

The full game will hit stores on Aug. 28.