Editorial policy

Store pages (App Store and Google Play), public full-clear videos, and written level indexes are the sources. A video title alone is weaker than a video whose opening frame shows the level number and the clock. Difficulty words copied from a third-party index are labeled as that index’s label. They are not treated as an official rank.

When sources disagree, the page keeps both readings. Missing timers, missing boards, and missing step lists stay blank. They are not guessed from a nearby level.

Sources and check dates appear at the bottom of each page, with one Limitation sentence where evidence has limits. Corrections are welcome at the contact page. Game names and artwork belong to their respective rights holders. The site’s guide illustrations are original explanatory diagrams, not captures of a particular game board.