Sizekin Animals

PAST GAMES · TUESDAY, OCTOBER 27, 2026 · DOESN’T COUNT TOWARD YOUR STREAK

PAST GAMES No. 3 Oct 27
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Past GamesNo. 3Oct 27
ROUND1 / 5
0 / 1,000
Preparing your round…

A field guide to animal scale

A photograph tells you an animal's shape, but rarely gives you a useful ruler. Here, one animal supplies that ruler. Use its stated measurement to estimate the other, then compare your decision with the size recorded in the library.

Standing height, body length and wingspan answer different questions. Read the measurement label before judging the outline. A tall-looking animal can still have a shorter measured body than its neighbour.

African penguin · 65 cm / Emu · 1.7 m
African penguin · 65 cm / Emu · 1.7 m. Illustrative comparison using the selected library measurements; artwork credits remain in the library.

Make a measurement, then test it

  1. 01 · Read the reference

    Find the fixed silhouette and read its number, unit and measurement direction. Decide which endpoints you are comparing before changing the target.

  2. 02 · Adjust the target

    Drag the target or use the ruler controls. A two-finger pinch changes your guess on touchscreens; the zoom buttons change the view. You can also use the plus and minus buttons for smaller adjustments.

  3. 03 · Reveal and compare

    Submit once you are satisfied. The reveal shows the recorded size beside your estimate. Base points depend on the size ratio; round weights turn those points into the run total.

What the label changes

Species, sex and posture matter. Treat the number as the selected example in this puzzle, not a promise that every animal of that species reaches exactly that size. Check any qualifier displayed beside the name.

A useful way to practise

Try comparing two standing animals first, then switch to a bird with a wingspan measurement. This separates remembering an animal's size from recognising which part of it the ruler is measuring.

Inspect the objects behind a round

The library lets you search names, filter a theme and inspect measurement notes and source credits. Retired entries remain available to explain older games, but are excluded from new draws. Counts there follow the current catalogue rather than a fixed list in this guide.

Choose your next set

Daily offers five rounds for the selected category and date. Unlimited lets you choose 5, 10, 20 or an endless run; these results are separate from Daily. An endless run can be finished after at least five rounds.

Animals · Daily · Round 1

How to play Sizekin

  1. Compare. Read the dark reference first: its label tells you the known size and which dimension is measured.
  2. Resize. Resize the light shape with a swipe, its handle, the ruler or the arrow keys. On touchscreens, pinching changes your guess. The zoom buttons only change the view.
  3. Lock in. Submit when the proportions look right. Red shows the selected true size. Each round starts with a score out of 100: within 6% earns 100, double or half earns 45, and a fivefold error earns 0.

SIZES IN

Choose a category

Now: Animals · daily

Leave this run?

Your progress is saved on this device.

Animals · Round 1/5 · Score: 0

Share game

Get Sizekin.

iPhone or iPad

Open this site in Safari. Tap Share → Add to Home Screen, then Add. If offered, leave Open as Web App switched on.

Android

Open this site in Chrome. Open the browser menu and choose Install app or Add to Home screen, then follow the prompt.

Computer

In Chrome or Edge, use the install icon in the address bar or the browser’s app menu. In a supported version of Safari on Mac, choose File → Add to Dock.