No pressure. Just a little practice.

Good intuition takes practice.

Look. Guess. Discover. Get a little closer every day.

Daily challenge
Five little experiments
0 pts
BasketballsCount the objectsWarm-up
15s
Filling up with curiosity…
Drag to explore

How many are in there?

Play as often as you likeSeparate from your daily scoreNo sign-up

Progress saved automatically. Come back anytime.

A little more curiosity?

No pressure, no limits. Something new in every round.

Explore the games

Today’s best guesses

Your first complete daily score counts for the leaderboard.

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How to play

Watch objects fall into a clear container. You have 15 seconds to observe and estimate. Free to play, with unlimited practice.

Each round scores 100 × max(0, 1 − absolute error / max(answer, 10)), rounded to a whole number. Practice is unlimited and does not change your daily record.

Less counting. More intuition.

Five rounds a day. The same little challenge for everyone.

  1. Take a lookAfter the objects settle, you have 15 seconds to look. Drag the scene to change your view.
  2. Make your guessEnter your guess before time runs out. It locks in automatically; empty rounds are skipped.
  3. See the answerThe closer you are, the more you score. Up to 100 points per round, 500 in total.

Only objects inside the glass count.

In Compare, choose the fuller side and estimate the difference. The wrong side scores zero. The timer continues in the background. New puzzles at 00:00 UTC.

Your progress stays with you.

Progress, statistics and settings stay in this browser. No account, ads or analytics tracking.

Clearing browser data removes local records. If you submit to the leaderboard, your nickname, guesses and score are saved on the server. Anyone with a challenge link can open it.