Every round is a new pair — generated on the fly from the whole library, as often as you like.
Daily mode deals five rounds; Unlimited deals a fresh pair every round, forever. Nothing to save, nothing to unlock.
Each round picks a reference and a target — animals, dinosaurs, towers, landmarks, countries. Only the same dimension (height vs height, span vs span) and a guessable ratio are matched.
The last 16 rounds never repeat the same target or pairing, so the deck keeps feeling fresh.
No — Unlimited is a separate practice mode. Your daily streak only tracks the daily puzzle.
Pairs are generated at runtime from the silhouette library. With the current library, dimension-matched pairing supports hundreds of rounds without repeats.
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The generator randomly mixes categories — geography (span) and objects (height or length) — and only pairs within the same dimension.