Use a separate wallet
Keep a wallet for casino play that holds only what you plan to bet. A bad approval then cannot touch your savings.
- Fund it with a set budget
- Never share the recovery phrase
MetaMask casinos: play from your own wallet, and sign with care
A MetaMask casino lets you deposit from, or connect, the MetaMask wallet, a browser extension and mobile app for Ethereum and other EVM networks. Connecting shares your address; it does not move funds.
The risk sits in what you sign afterwards. A token approval lets a contract move your tokens up to an amount you set, and it stays live until you revoke it. Below: what each prompt means, what gas costs, the casinos we list and a checklist.
18+ only
Gas snapshot 7 Oct 2026
Approvals explained
By
Natasha Fernandez
Updated Oct 6, 2026
- Plain ETH transfer
- 21,000 gas fixed by the protocol
- Gas price
- 0.27 gwei snapshot 7 Oct 2026
- ETH price
- $2,699 CoinGecko, 7 Oct 2026
- Transfer fee
- About $0.02 at that snapshot
Short answer
How does MetaMask work at a crypto casino?
Either you send coins from MetaMask to the casino's deposit address, or you connect the wallet so the site can request signatures and transactions. Connecting only shares your address. A transaction or a token approval needs your confirmation in MetaMask, and that is the step to read carefully.
Connect
Address only
No funds move and no gas is paid.
Transaction
Moves funds
Paid in gas on the network you are on.
Approval
Grants access
Lets a contract move a token up to the approved amount.
MetaMask is about connecting a wallet. For bets settled by smart contracts, see dApp casinos.
What you sign
Every MetaMask prompt and what it allows
Approvals outlive the session. An approval stays valid until you set it to zero, so revoke it when you stop playing.
| Prompt | Funds move? | What it allows | What to check |
|---|---|---|---|
| Connect | No | The site sees your address and balances | The site address in the prompt |
| Sign-in message | No | Proves you own the address | That it is plain text, not a permit |
| Transaction | Yes | Sends coins or calls a contract; costs gas | Amount, recipient and network |
| Token approval | Later | A contract can move that token up to the approved amount | Approve only what you plan to play |
| Permit signature | Later | Some tokens accept a signed permit that works like an approval | Treat it like an approval |
ERC-20 approve and allowance (EIP-20) and permit (EIP-2612), eips.ethereum.org.
Wallet
Connect a wallet without signing away your tokens
Limit and revoke approvals
Approve the amount you plan to play rather than an unlimited amount, and revoke the approval afterwards with a token approval checker such as Etherscan's.
- Check the spender address
- Revoke after each session
Gas is cheap until it is not
At the 7 Oct 2026 snapshot a plain ETH transfer cost about $0.02. Contract calls use more gas than a transfer, and gas prices rise when the network is busy.
ethereum.org gas documentation (21,000 gas per transfer); gas price from a public Ethereum RPC and ETH price from CoinGecko, 7 Oct 2026.
Checklist
Before you connect MetaMask
Connect
-
Check the site address Type the casino address yourself; wallet-drainer sites copy casino designs.
-
Pick the network Switch MetaMask to the network the cashier lists before you send.
-
Read every prompt Know whether you are signing a message, a transaction or an approval.
-
Set an approval limit Edit the approval amount to what you plan to play.
-
Revoke afterwards Remove the approval when you are done.
Glossary
Wallet terms
- Gas
- The fee for a transaction on Ethereum and EVM networks, paid in the network's coin. So what: A plain ETH transfer uses 21,000 gas; contract calls use more.
- Allowance
- The amount of a token a contract may still move from your wallet after an approval. So what: Check it and set it to zero when you stop playing.
- Recovery phrase
- The words that restore your wallet. So what: No casino or support agent ever needs it.
MetaMask casino FAQ
What is a MetaMask casino?
A crypto casino that lets you deposit from, or connect, the MetaMask wallet on Ethereum or another EVM network.
Can I use MetaMask on my phone?
Yes. MetaMask has a mobile app with a built-in browser. See mobile crypto casinos for sending from a phone.
What is the difference between a MetaMask casino and a dApp casino?
A MetaMask casino accepts your wallet for deposits; your balance then usually sits with the casino. A dApp casino settles bets through a smart contract from your wallet.
Is it safe to connect MetaMask to a casino?
Connecting only shares your address. The risk is in approvals and transactions you confirm afterwards, so read each prompt and keep only your playing budget in that wallet.
How do I revoke a casino's token approval?
Use a token approval checker such as Etherscan's, connect the same wallet and set the casino contract's allowance to zero. Revoking costs a small gas fee.
What does a MetaMask deposit cost?
The network fee, paid in gas. At our 7 Oct 2026 snapshot a plain ETH transfer cost about $0.02; token transfers and contract calls cost more, and fees rise when the network is busy.
Play safely
Crypto makes it fast. Set the limits first.
18+ only
Every casino we list sets an age limit, and some countries set it higher.
Responsible gaming →Transfers are final
A crypto deposit cannot be charged back. Send only what you can afford to lose.
Set a budget →Prices move
A coin balance can fall in value while you play. Stablecoins remove that swing, not the house edge.
Stablecoins →Get help
Free, confidential help is available if gambling stops being fun.
Gambling addiction help →Other casino types Live
