04 / THE DEVELOPER
An evolving game.
An independent developer.
Numbers and Time
Developed by Yuuki Ishiyama
Developer profile
Developed and operated by Yuuki Ishiyama. Send feedback, bug reports, or questions about removing a published record through the And Time contact form linked below, and mention Numbers and Time. The developer’s public profile is ishiyamaism on GitHub.
Questions about controls
Tap anywhere on each panel. The first gives you its number; later panels add their operator and number. A panel cannot be reused in one expression. Tap the last selected panel again to undo it. The how-to-play page includes worked examples.
Records and data
Information stored in your browser and information published to the ranking are handled separately. Read the privacy page before clearing browser data. Avoid including personal contact details in your public display name.
Explore the series
Numbers and Time will continue to develop as its own work. For a different kind of search and release, try Ads and Time or Sezoku and Time in the same browser.