Open Trivia DB
A free, community-driven trivia database powering thousands of quiz apps. Play directly in your browser with endless categories and difficulties.
About This Game
Open Trivia Database (OpenTDB) is the backbone behind countless trivia apps and websites. Maintained by a passionate community, it offers a massive, ever-growing collection of verified trivia questions across dozens of categories — from science and history to video games and mythology.
You can play directly on the OpenTDB website by generating custom quizzes: pick your category, difficulty, and number of questions, then answer them one at a time. It is stripped-down and no-frills compared to flashier platforms, but that simplicity is the point. There are no ads interrupting your flow, no upsells, and no accounts required. Just pure trivia.
For developers and quiz-night organizers, OpenTDB also provides a free API, making it trivially easy (pun intended) to pull questions into your own apps, Discord bots, or custom game setups. If you care about trivia quality and breadth more than bells and whistles, Open Trivia DB is an indispensable resource.
How to Play
Visit the website
Head to opentdb.com and click "Play" or "API" depending on whether you want to play directly or integrate questions elsewhere.
Configure your quiz
Select the number of questions, category (e.g., Science, Sports, Entertainment), difficulty (easy, medium, hard), and question type (multiple choice or true/false).
Answer questions
Questions are presented one at a time. Select your answer and get instant feedback on whether you were correct.
Review your score
After completing all questions, see your total score and review which ones you got right or wrong.
Tips & Strategy
- Start with "medium" difficulty for a balanced challenge — easy can feel too simple and hard questions are often obscure.
- Use the API to build custom quiz nights with friends via screen-share.
- Contribute your own questions to help the community grow the database.
- Combine multiple categories for a well-rounded trivia session.
Pros & Cons
Pros
- Completely free with no ads or account requirements
- Massive question database spanning dozens of categories
- Open API lets developers build custom trivia experiences
- Community-verified questions maintain quality
Cons
- No built-in multiplayer — it is a single-player browser experience
- Minimal UI with no animations or sound effects
- Some niche categories have a smaller question pool
- No leaderboards or progression tracking
Game Details
- Players
- 1 player(recommended: 1)
- Duration
- 5-20 minutes
- Difficulty
- Medium
- Price
- Free
- Platforms
- Web
Screenshots
