As a Layer-2 Rollup, ZKcandy gas fees can be paid in Ether (ETH). While Account Abstraction (as per EIP-4337) allows for gas to be paid in other ERC20 tokens, Externally-Owned Account (EOA) wallets, like the kind you would use with Metamask, will pay fees in ETH.
As ZKcandy builds towards its mainnet launch, we will be updating this documentation with more information about methods of Account Abstraction and different types of contract wallets that will become compatible with ZKcandy. Some of these wallets will be compatible with our upcoming Gamer Decentralised Identity (DID) product, Candy Passport.
On the ZKcandy Sepolia Testnet, Ether can be bridged from the Ethereum Sepolia Testnet via our official bridge. You can find out more on how to use the ZKcandy - Sepolia bridge here.