Gamers can get their first look at the new Infinity Engine and all the other new features in "Madden NFL 13" today as EA Sports has released a free, playable demo on Xbox Live and the PlayStation network.

Justin Tuck's Giants are currently playable on a downloadable demo of "Madden 13." EA Sports

The demo includes two matchups: A rematch of last year's NFC title game with the New York Giants and the San Francisco 49ers, and the first look at Robert Griffin III in "Madden" gameplay with the Washington Redskins vs. Seattle Seahawks.

Players who tweet their results while playing the demo with the hashtag #MaddenNFL13Demo will be entered into a drawing to win a free copy of the game. EA will give away 13 copies of the game over the next 13 days.