How we pick a Ballpark question
Ballpark asks five questions a day: how big, how many, how far. Every question has to pass a few rules before it makes it into the game.
1. One clear number
The answer has to be a single number that most people can picture. "How many keys are on a standard piano?" works: 88. Questions that depend on how you measure, or that change every month, don't make the cut.
2. A source we trust
Every answer is checked against a source, such as a survey, an encyclopedia or an official body, and we keep that source with the question. Big numbers are rounded, and we say so. Mount Everest is 8,849 m, from the 2020 China–Nepal survey.
3. A guess anyone can make
You don't need to know the answer to play well. You need to reason your way there. The slider covers a huge range, so even a wild guess lands somewhere, and getting within 10% counts as a bullseye. The best questions are ones where thinking it through gets you surprisingly close.
4. Something worth learning
After each answer we show one short fact, the kind you'll want to tell someone. A piano's 88 keys are 52 white and 36 black. The deepest point of the ocean could swallow Everest with 2 km of water to spare.
5. A good mix
Each day's five questions mix space, the human body, places, history and everyday things, so no single topic decides your score. When you're done, the bonus round asks "which is bigger?" between pairs from the whole question bank.
Spotted an answer that looks wrong? Tell us the game number and the question on the Contact page. We fix mistakes for everyone who plays after you.
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