Attribution & licenses

Open Trivia Database (CC BY-SA 4.0)

52 questions in this app are derived from the Open Trivia Database, © its contributors, and are licensed under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0).

Those questions were reviewed, fact-checked and in some cases edited or re-ordered for this app. Adapted versions remain available under the same CC BY-SA 4.0 license, and you may reuse them under its terms with attribution to the Open Trivia Database (https://opentdb.com/).

Wikipedia-derived facts (CC BY-SA 4.0)

64 questions were written originally for this app (wording CC0), with facts drawn from Wikipedia articles licensed under CC BY-SA 4.0. The source article for each is recorded with the question.

Wikidata (CC0 1.0)

62 questions are generated from facts in Wikidata, which is available under CC0 1.0. Question wording is original.