VNDB, under ODbL.

Every catalog record on Yumefumi (titles, dates, developers, tags, cover metadata, route structures) comes from VNDB, built by volunteers over twenty years.

VNDB catalog data is released under the Open Database License (ODbL) v1.0. Yumefumi uses it under the same license, with attribution. This page is that attribution.

ODbL is share-alike. Any structured catalog data exported from Yumefumi carries the same license. User-written content on Yumefumi (reviews, lists, ratings, notes) is separate, not covered by ODbL, and belongs to whoever wrote it.

If a catalog entry is wrong, the place to fix it is VNDB. Yumefumi syncs from VNDB periodically, so corrections flow downstream once they land there.

Licensing or attribution questions: support@yumefumi.com.