ハンコまっすぐ

ハンコまっすぐ (Hanko Massugu, roughly “stamp it straight”) is a one-minute browser game for smartphones. On a fictional approval request (稟議書), five people stamp their seals in turn, the staff member, the chief, the section manager, the department manager and the president, and you tap to time each stamp. Each rank has its own target: the developer's joke is that lower ranks bow their stamps toward the president, so the staff member aims for 47°, the chief 36°, the section manager 27°, the department manager 22°, and the president stamps straight at 0°. Each stamp scores up to 200 points for tilt, position and bow, for a total of up to 1,000 points and one of 26 titles. The requests are drawn from 4,172 fictional cases in 13 categories, such as IT, idols, railways and anime, issued by 355 fictional companies whose names were checked against Japan's public corporate-number data so that no real company appears. Rare stamps include cherry blossoms, a beckoning cat and a paw print; a rare special mode with characters from OVELIS's web manga けだま商事 exists only in the playable version. The result card and the finished form can be saved as images and shared on X. The developer, Yuno of the one-person studio OVELIS, says the code was written with the AI coding tools Codex and Claude Code, most of the case texts and company names were made with Claude, and a person played and checked it, asking for fixes. Free in the browser, with the code and data on GitHub under the MIT licence.