Plain
Questions
A small daily ritual — Plain rewards a feel for magnitude rather than perfect recall. Everyone gets the same daily puzzle, with no endless feed.
Where do answers come from?
Our category lists use Wikipedia, World Bank and PubChem. Each value has a source and an import check date.
Is this the original game?
plain game is independently built, inspired by playplain.app. Play here in English or Simplified Chinese; our puzzles and scoring run on this website.
Is it free?
Yes. Daily and practice flights are free, with no account required.