# Horus Wargame > Horus Wargame is a CTF (Capture The Flag) on Starknet. This Web3 wargame on [Cairo](https://www.cairo-lang.org/) is composed of different challenges that players can unlock by leveraging any vulnerability they discover in the code. This CTF is inspired by the project [Ethernaut](https://ethernaut.openzeppelin.com/) created by Open Zeppelin. The game is 100% open source and all challenges are contributions made by the community. If you have an interesting idea, PRs are welcome at [github.com/BoredLabsHQ/Horus](https://github.com/BoredLabsHQ/Horus).