Ethernaut is a Web3/Solidity based wargame.
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Capture the Ether is a game in which you hack Ethereum smart contracts to learn about security.

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Ethernaut
Ethernaut is a Web3/Solidity based wargame.

EVM Gas Puzzles
Practice gas optimization with real smart contracts.

Paradigm CTF
Paradigm CTF is an online competition for smart contract hackers.
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