Log Horizon Database

The Log Horizon Database (ログ・ホライズン データベース) is an official compilation of Log Horizon material for the Log Horizon TRPG published on the TRPG's website.

Along with summarizing information from the light novel and TRPG supplementary material, it has also revealed some (possibly-)future material, such as details on some yet-to-be-seen Geniuses.