Build a five-minute vertical slice

The problem

A large feature list can conceal a missing playable loop.

Practical procedure

Ship a tiny start-to-finish level with controls, success feedback, retry and a clear reason to replay.

Worked scenario

A seven-by-seven maze with three pickups is more informative than twenty static environment illustrations.

Acceptance check

Time the first successful completion and note where testers hesitate or misunderstand the rules.

Apply the method

Use the related interactive tool to try the concept on an inspectable example. Record the starting assumptions and expected result before changing settings, then compare what the tool actually does. Where the result differs, keep the release marked experimental and document the discrepancy.

Further reading: Relevant primary technical documentation. This guide is an educational procedure, not a substitute for independent usability or compliance review.