To find your Game ID/ZID in mobile Poker:
 
  1. Tap the gear wheel icon in the lower right corner of the screen. 

     
  2. Tap the Account Info button.

     
     
  3. The number listed under Zynga ID is your UID/ZID.

 
Here's another way to find your Game ID/ZID on web (Facebook.com or zyngapoker.com):
  1. Log into Zynga Poker on Facebook or zyngapoker.com and wait for the game to load.
  2. Scroll down. Your Game ID / ZID is displayed at the bottom left side of the screen.