Zynga Card is a Card enables you to purchase coins and cash for all zynga games such as CityVille, FarmVille, Zynga Poker, you can also use zynga cards for this games :
Art With Friends, Ayakashi Ghost Guild, Bubble Safari, Bubble Safari Ocean, CastleVille, CastleVille Legends,ChefVille, Chess with Friends, CityVille, CityVille Holiday town, Civility Hometown, Draw Somethin, Duck Dynasty Slots, FarmVille,FarmVille 2, FarmVille 2: Country Escape, Gems With Friends, Hanging Wit, Friends, Hit It Rich, Mafia Wars, Matching With Friends, NFL Showdown, Ninja Kingdom, Pioneer Trail, Puzle Charms, Scramble With Friends, Skateboard Slam, Slots - Riches of Olympus, Solstice Arena, Stampede, Run, What's The Phrase, Wizard of Oz Slots, Words With Friends, Zombie Smash, Zynga Poker and Zynga Poker Classic.
1. Go to Game Card tab in Zynga Games.
2. Enter Zynga game code then press on "Next Step".