HackMerlin
Trick a chatbot wizard into revealing each level's secret password
HackMerlin is a prompt injection game. Merlin is a chatbot guarding a secret word. You ask him questions, try to get the password out of him, then type it in to move on. Each time you succeed Merlin levels up and gets harder to fool, and the goal is to beat level 7.
Free · No login · Browser · Beginner
About HackMerlin
It trains thinking like an attacker against large language models: rephrasing, misdirection and finding gaps in the rules a model follows. There is no code to write, so it suits people curious about AI security rather than programming practice.
It is free in the browser with no account. If you finish, you can add a name to a leaderboard of fastest runs.
On Breakpoint since 28 Oct 2026.
Made this game? Claim it →
Tips and discussion
No tips yet.
Sign in to share a tip.