Do I need an account?

No — every challenge and bug hunt runs without signup. Signing in is optional: with email/password or Google it syncs your completed challenges and badges across devices, and you can manage or delete the account any time from your profile page.

Which locators should I use?

Every interactive element carries a stable id and data-testid — prefer those over text or CSS selectors that can change.

Is the data deterministic?

Yes, with two loudly-labeled exceptions built to teach the failure mode: Challenging DOM's ids, and Notifications'/Dynamic Content's randomness.

How do I speed up timer-driven challenges in CI?

Append ?delay=… to shorten waits on Dynamic Loading, Dynamic Controls, Tooltips, Obscured Elements, Streaming Feed and Session Timeout.

Five Stable-Locator Anti-Patterns

Recognize brittle UI locator patterns and replace them with semantic roles, stable test ids and scoped assertions.

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