The short answer: there are no Zynga Poker codes
Zynga Poker does not operate a public promo code system. We checked every first-party source available: Zynga's own game page, the official web store, the help centre, and the Google Play, Apple App Store and Steam listings. None of them documents a code directory or a redemption page. We previously ran a codes page for this game with a step-by-step redemption walkthrough on it, and that was wrong. It has been retired and now points at the free chips feed, which is where the real rewards are.
Where the confusion comes from
It is traceable. Older unofficial guides described a Redeem option in the game, or claimed a limited code entry for new accounts, and that claim has been copied from site to site ever since. Nothing in the current game or its documentation supports it. Meanwhile the coupon sites publishing Zynga Poker codes show no first-party confirmation, and the ones we reviewed carried implausibly old user comments and unverified expiry claims.
What Zynga actually distributes
Clickable chip links. You do not type them anywhere: you tap one on the device where you are logged into the game, and the Chips credit automatically. Zynga posts them through the official channels, and our free chips page collects them sorted newest first. That is the mechanism people are really describing when they talk about Zynga Poker codes.
The free chip sources that do exist
The daily bonus is advertised at up to 45,000,000 Chips, though the words up to are doing real work there. Alongside it sit tournament winnings from Sit-N-Go, Spin & Win and multi-table events, league rewards, event prizes and social bonuses. The web store at store.zyngapoker.com carries free gifts that do not appear in the app at all, which is the single most overlooked source in this game.
Be careful what you hand over
Sites offering Zynga Poker codes frequently want something first: a login, a survey, an app install, or your Facebook credentials. Genuine chip links never ask for any of that, because they already know which account tapped them. Treat any page requesting a password or a sign-in to claim Zynga Poker chips as one to close rather than complete, and note that chip balances live on Zynga's servers where no browser tool can reach them.