POL is the token that powers the Polygon network, renamed from MATIC as part of Polygon's 2024 upgrade to its token architecture — the same underlying project, a new ticker. Where a casino's interface still shows MATIC, it is referring to the same asset.
Where a casino supports POL, it usually offers a real choice: the native Polygon chain, where fees are typically a fraction of a cent and confirmations are fast, or a wrapped ERC20 version on Ethereum mainnet, which carries Ethereum's usual gas costs — often tens of times more expensive for an identical transfer. Unless there is a specific reason to hold the Ethereum-native version, the Polygon-native option is almost always the cheaper way to move this coin.
Polygon itself is also one of the more common secondary networks other tokens on this list use for cheaper transfers — USDT and USDC among them — so if a casino's interface shows "Polygon" as a network option for a different coin, that is the same chain POL runs on natively, not a separate thing to research from scratch.
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This list holds fewer than 5 casinos, so it is kept out of search results until it offers a real choice.