Start with the task
How to play Packle
- Read How to Play, then inspect the shape and the single circle shown for scale.
- Estimate how many circles of that same size fit without overlaps. Consider narrow areas, boundaries and gaps left by a packing layout.
- Enter a whole number and press Guess. Use the hot/cold response to adjust, with up to five guesses for the daily shape.
Controls: Type a whole-number guess.
Sound: No sound needed.
Read the feedback
What your Packle result means
Packle’s central feedback is closeness, with labels such as Ice Cold, Cold, Warm, Hot and Boiling. The daily challenge gives five tries to find the exact count. Those labels are not a Perceptle score or a direct measure of how many percentage points away your guess is.
What to look at after a guess
Look at the outline again after each response. A simple shape-area divided by circle-area estimate ignores boundary losses and packing gaps. Treat it as a rough starting point, then use the actual geometry and feedback. The one visible circle gives scale; it is not the complete packed answer.
Common mistakes and what to try
Filling every part of the outline in your head
Small corners or narrow strips can contain area but still be too small for another whole circle.
Assuming circles tile without gaps
Circles leave space between one another. A rectangular mental grid and an area ratio can both overestimate the usable capacity.
Expecting directional feedback
A hot/cold label describes closeness. It is not automatically a higher-or-lower arrow; read what the actual response tells you.
How is Packle like Perceptle?
Choose it for spatial quantity judgment, especially if Count or Split makes you look at how much space something occupies.
You can refine the same puzzle using hot/cold feedback over five guesses. It is a packing problem, not simply counting visible dots or dividing line length.
Compare the tasks, daily formats and controls of all ten games →