Chrono Trivia is a free daily timeline puzzle game that tests your knowledge of history, pop culture, sports, science, technology, and more. Each day you're given four real events and your job is to arrange them in chronological order, from earliest to most recent.

With a curated database of hundreds of milestone events across six categories, you'll discover fascinating facts every time you play. Our events are carefully selected to be interesting, educational, and fun - focusing on positive milestones, achievements, inventions, and cultural moments that shaped our world.

Think you know when things happened? Prove it.

Play up to 6 puzzles every day, one from each category:

Solve puzzles to build your daily streak. Earn badges for milestones like solving on your first try, beating expert mode, completing all 6 categories in a day, solving in under 30 seconds, and more. Come back every day for new puzzles and keep your streak alive. Share your daily results with friends and see who knows their history best.

After completing puzzles, share your results with friends. You can share individual category results or your full daily summary showing how you did across all six categories. Challenge your friends to beat your score!

Chrono Trivia's event database is carefully curated to focus on positive milestones, achievements, discoveries, and cultural moments. We intentionally avoid events involving violence, tragedy, or politically divisive topics to keep the game enjoyable and accessible for all ages.

Every event in Chrono Trivia comes with a verified historical fact, a deeper detail about what made that moment significant. After completing a puzzle, you'll see the correct order with years revealed, plus the story behind each event. Our Past Puzzles Archive lets you revisit any previous puzzle and read the full historical context, whether you played that day or not.

We've curated over 800 events spanning from the 1400s to today across six categories. Events are chosen to be genuinely interesting: surprising connections, forgotten firsts, and moments that reshaped daily life. You'll learn things you didn't know you didn't know - and probably want to share them with someone.

Here's a small sample of the kinds of events you'll encounter across each category. Every event includes a verified historical fact that's revealed after you complete the puzzle.

📚 Browse All Past Puzzles →

Building a streak is one of the most satisfying parts of Chrono Trivia. Win at least one puzzle every day and your streak counter climbs. Losing a day resets it to zero, which creates real stakes for each morning session. The leaderboard is your own personal history. How long can you keep the chain going?

Streaks are tracked entirely on your own device, so there's no account required. Your progress is private, fast, and always available - even offline after your first load.

Classic mode asks you to sort events in order. Expert mode asks you to also guess the year each event happened. Your guess is counted correct if it falls within 2 years of the actual date. It sounds simple - until you're trying to remember whether the first iPhone came out in 2006 or 2007, or whether Roger Bannister broke the four-minute mile before or after Edmund Hillary climbed Everest.

Expert mode rewards not just pattern recognition but genuine historical knowledge. Completing a puzzle in Expert mode without hints earns you a special badge and maximum points.

Chrono Trivia is completely free to play and always will be. To keep the site running, you may see occasional non-intrusive ads. Your experience playing the game comes first — ads are placed away from the game area and never interrupt play.

If you want to support us right now, you can buy us a coffee. Every bit helps and we genuinely appreciate it.

Found a bug, spotted a wrong date, or have an idea for a new event category? We read every message and love hearing from players. Visit our contact page to get in touch.

Play Today's Puzzle →