Double Dragon 3: The Rosetta Stone

Double Dragon 3

Hidden options:
Press A + B + C when the brick wall with hieroglyphs scrolls past during the opening screen. A hidden options menu will appear allowing character selection and other choices.

Play as Roney Urquidez and Sunny Urquidez:
Enable the "Hidden options" code. Then, choose Roney, Sunny at the "Start Menu" option. You will now begin game play as Roney Urquidez and if player two joins in, he or she will be Sunny Urquidez.

Play as Chin Seimei and Chin Taimei:
Enable the "Hidden options" code. Then, choose Seimei, Taimei at the "Start Menu" option. You will now begin game play as Chin Seimei and if player two joins in, he or she will be Chin Taimei. Note: Chin Taimei is Chin Seimei's brother from Double Dragon and Double Dragon 2.

Play as Ooyama Masahiko and Ooyama Nunio:
Enable the "Hidden options" code. Then, choose Masahiko, Nunio at the "Start Menu" option. You will now begin game play as Ooyama Masahiko and if player two joins in, he or she will be Ooyama Nunio.