Five questions a day.

Terka is a daily number-estimation game from brahmana.id. Every day there are 5 questions, the same for every player. You start with 500 coins, give one estimate per question, and stake coins on each one. The closer your estimate, the bigger the payout.

Why it's called Terka

In Indonesian, menerka means to estimate or make an educated guess. Use what you already know to get close to the answer.

How we choose questions

• You can reason your way there. A question has to be approachable with rough math, like a population multiplied by an everyday habit. Numbers you can only memorise, like the height of a mountain, don't make the cut.
• Sourced. Every answer has a public source: company reports, statistics agencies, official bodies or scientific journals. Numbers without a source are dropped.
• Clear about place and time. We always state the country and the year of the data, because numbers change from year to year.
• Honest about disagreement. When two sources differ only slightly, about a quarter or less, we use their average. When they differ a lot, we use the most reliable one.

How coins are scored

Your estimate is compared with the answer as a multiple, whether too high or too low. Off by 1.25× or less and your stake can triple. Off by 3× and you get your stake back. Off by 10× or more and the stake is lost. Each question has 10 minutes. The first 2 minutes are free, then your winnings shrink slowly to 30% at minute 10. After 10 minutes, the stake is lost.

Most questions are about Indonesia

Terka is made in Indonesia, so about a third of the questions are about Indonesian life: shops, transport, food, elections. They are still estimable from the outside: think about 280 million people and their daily habits.

Behind Terka

Terka is brought to you by brahmana.id, which makes and maintains it. News about Terka is on @brahmanamedia: Instagram, TikTok and YouTube. Found a wrong answer, have a question idea or a suggestion? Send it to us.