Here's how you can download the Zynga Poker app free for Android devices.
1. Go to the Google Play page for the free app Zynga Poker.
2. Tap the Install button.
Here's a description of Zynga Poker:
"New 1-on-1 Poker mode! Play turn-based, heads up hold'em poker with Facebook friends or random opponents!
Play a live hand of Texas Hold’em against millions of real players with Zynga Poker, the #1 social Texas Hold’em game on Facebook. Get $20K free chips for your first game. Experience Las Vegas casino VIP style playing online against players from Facebook, Google Android and iPhone.
Get $20K in chips FREE for your first time playing."