# OpenZeppelin/ethernaut

Web3/Solidity based wargame

Repository: https://github.com/OpenZeppelin/ethernaut
Canonical: https://ross.abutalabs.com/products/ethernaut
Language: Solidity
License: AGPL-3.0
License Family: copyleft
Last push: 2026-08-26T19:55:51+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 3212, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2330, forks 786 (observed 2026-08-28T04:06:37.608596+00:00)

## What it is
Ethernaut is a Web3/Solidity-based wargame played in the Ethereum Virtual Machine, where each level is a smart contract that must be hacked. It serves both as an educational tool for learning Ethereum and as a catalogue of historical smart contract exploits.

## Use cases
- learn ethereum and solidity by hacking smart contracts
- practice smart contract security exploits
- study historical web3 hacks as game levels
- train for blockchain security audits
- set up a local ethereum wargame environment
- teach solidity vulnerabilities in a hands-on way

## When to choose
- you want to learn ethereum development and security interactively
- you are preparing for smart contract auditing or CTF competitions
- you want a self-hosted, extensible wargame with community levels

## When to avoid
- you need production smart contract security tooling rather than a game
- you are not interested in blockchain or solidity
- you want a guided course rather than self-directed puzzle levels

## Facets
- artifact type: learning-resource
- maturity: active
- function: security, penetration-testing, game
- domain: blockchain, security, education, developer-tools
- platform: cross-platform
- tags: wargame, solidity, ethereum, smart-contract-security, ctf, web3, web-server, nodejs

## Member repositories
- OpenZeppelin/ethernaut (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:37.608596+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:38:01.260823+00:00, confidence not recorded.
  - readme: https://github.com/OpenZeppelin/ethernaut (fetched 2026-08-28T04:06:37.608596+00:00, sha d1926995e78f)
- Data as of 2026-08-30T08:39:29.467469+00:00.