# NFT PFP Onboarding

Any NFT existing on Ethereum, EVM, or L2 networks can be introduced into the TimeVerse game through the mapping mechanism of the gaming engine, greatly reducing the barrier to entry and gas fees for players.&#x20;

Based on ERC-6551 V3 and LayerZero V2, players can create token-bound accounts (TBAs) for NFT avatars located on any chain, turning them into storable assets. All transactions and various assets generated by players in the game (Polygon chain) are stored in TBAs through cross-chain information transmission, thus avoiding unnecessary cross-chain assets, high gas fees, and security concerns.&#x20;

NFTs on Ethereum, Polygon, OP, and all other blockchains can collaborate and compete in the same gaming space. Acting as wallets for internal assets, TBAs allow players to conduct asset transactions by calling smart contracts, thereby achieving profits.

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