Yes — the category and word list are picked deterministically from the date (in your language), so anyone visiting on the same day gets the same puzzle. It resets at the same moment worldwide.

Solve the Daily Puzzle on consecutive days to build your streak. It's tracked right in your browser (no account needed), and milestone badges unlock at 3, 7, and 30 days, 100 total puzzles, and a sub-2-minute solve.

Your current streak resets to zero the next time you complete a Daily Puzzle after a gap — but your best streak and total-completed count are kept, so nothing is lost permanently.