What counts as a "correct" order?

The exact ascending sequence. Ties don't exist — the game always generates circles with distinct sizes, though differences can be very small.

How many circles are there per round?

Easy levels use 4 circles; hard modes go up to 7. Beyond 7, reliable ordering requires more pairwise comparisons than most people can handle simultaneously.

Does circle position affect size perception?

Yes — isolated circles in corners look slightly smaller than centrally-placed ones of the same size. The game randomizes positions to prevent position-based cheating.

Can You Sort by Size?

Can you sort objects by size — click them smallest to largest without making a mistake? A set of circles appears at slightly different sizes and you click them in ascending size order. Early rounds are easy because the size differences are large. Harder rounds compress the range until adjacent circles differ by only 5–8%, forcing your visual size discrimination to its absolute limit.

How to Play

Several circles appear on screen at varying sizes.
Click them in order from smallest to largest.
Each correct click is highlighted; a wrong click ends the sequence.
Harder modes increase the number of circles and compress the size range.

Why It's Hard

Ordinal size sorting requires pairwise comparison across all objects simultaneously. With 4 circles, there are 6 pairs to compare mentally; with 6 circles, there are 15. When size differences are small, comparison errors cascade — getting one pair wrong shifts every subsequent click. Your visual system is tuned for "pop-out" differences, not subtle gradients requiring careful rank ordering.

Tips

1Don't click immediately — scan the full set first and identify the definitely-smallest and definitely-largest.
2Work from the extremes inward: click the smallest, then the largest, then the smallest of the remaining, etc.
3For near-equal circles, look at the amount of "air" around each one — more surrounding space makes it look smaller than it is.

FAQ

What counts as a "correct" order?: The exact ascending sequence. Ties don't exist — the game always generates circles with distinct sizes, though differences can be very small.
How many circles are there per round?: Easy levels use 4 circles; hard modes go up to 7. Beyond 7, reliable ordering requires more pairwise comparisons than most people can handle simultaneously.
Does circle position affect size perception?: Yes — isolated circles in corners look slightly smaller than centrally-placed ones of the same size. The game randomizes positions to prevent position-based cheating.

Built by

Ethan R. Caldwell

Game Developer · Wilmington, DE

Designed Can You Sort by Size? and 46 other browser puzzles. Game developer based in Wilmington, Delaware. Hardcore puzzle gamer at heart — obsessed with logic puzzles, sokoban-style mechanics, and physics-based brain teasers. Off the clock, unwinds with ARPGs, RPGs and JRPGs.

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