A localized rulebook is correct only if it proves the same rule

Situation

In a rulebook, even a stylistic translation difference can become a behavioural defect. If wording suggests a different order or condition, the player reasonably expects different software behaviour. Localized PDFs were therefore not marketing attachments; they were part of the product's domain documentation.

Approach

I reviewed each language version against the source and against the rules implemented by the engine. We also made the presentation responsive so a rulebook remained usable on mobile during a game. Different languages did not receive duplicated engine logic; the rule stayed the same and only its explanation changed.

Outcome

Players could verify a rule in their own language without receiving different game behaviour. A mismatch between rulebook and implementation became its own defect category, which made it easier to decide later whether the code or the wording needed to change.