A game for dev teams, 3 minutes
Spot the bug in AI code
Spot the bug in AI code across ten short snippets that could easily pass review. Each one has exactly one bad line: click it to see why it is wrong and which CI gate would have caught it before a human did.
Round 1 of 10
jobs/send-reminders.ts
Click the line with the bug. Arrow keys move up and down, Enter picks.
Frequently asked questions
- Was this code really written by AI?
- We wrote the snippets after the mistakes AI coding agents commonly make, and shortened them to fit the screen. Every bug is real: you can run it or prove it with a test.
- What is a CI gate?
- An automatic check in CI that blocks a bad change from merging: lint, type check, test, banned patterns, a review rule or a workflow policy. An agent can work around a rule in AGENTS.md, it cannot work around a gate in CI.
- Do you store my score?
- Not with your name. Anonymous statistics only get that you finished the game and your score. The share link carries just the score number, nothing about you.
Want these gates in your repository?
We set up lint, tests, banned patterns, review rules and a CI policy so a machine stops bugs in AI code before review. We reply within two business days.