Break the Field

Break the Field is a free browser game for software testers where you probe a single sign-up form to discover all 36 hidden input validation rules, covering boundaries, whitespace, encoding and injection.

A sign-up form is the most tested thing on the internet and still the most broken. Break the Field hides 36 validation checks in one and asks you to find every single one.

Open Break the Field on Testing Titbits Playground · ~7 min · Input Testing · Free, no sign-up

How to play Break the Field

1. Open the sign-up form. It looks ordinary. It is not.
2. Enter values designed to violate a rule you suspect exists.
3. Each rule you trigger is logged as a find.
4. Work systematically - boundaries, length, whitespace, character sets, encoding, injection.
5. All 36 found is a perfect run. Score is out of 100.

What you will learn

• A repeatable checklist for attacking any input field.
• Boundary values, equivalence partitions and character-set edge cases in practice.
• Why whitespace and Unicode break more forms than injection does.
• How to record input findings so a developer can act on them.

Frequently asked questions

How do you test an input field?

Attack it along known dimensions: minimum and maximum length, boundary values, empty and whitespace-only input, character sets and Unicode, leading and trailing spaces, case sensitivity, format rules, and injection payloads. Break the Field turns that list into 36 concrete finds.

How many rules are hidden in the form?

Thirty-six. A perfect run finds all of them.

Is this a security testing game?

Partly. Injection is one of the categories, but most of the 36 rules are ordinary input validation that ships broken far more often than security holes do.

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Created by Rahul Parwal · TestingTitbits.com