Wormillion

Each accepted answer scores between 75 and 1,500 points based on its obscurity within its category, measured by the median of sixty days of monthly English-Wikipedia pageviews on a logarithmic scale. The most-read place in a category scores 0% (75 points); the least-read scores 100% (1,500 points).

Every player gets the same ten prompts each day, turning over at midnight on your own clock, with one attempt. A share grid shows one square per round, and a recap of each dig is published three days later, once every time zone has played.

Prompts draw from nine categories — countries (197), capital cities (247), non-capital cities (3,798), rivers (3,703), lakes (1,232), mountains (2,625), deserts (137), islands (2,391) and seas/oceans (571) — every one with its own Wikipedia article. Each dig uses every category once, plus one twice.

The first two rounds are plain (e.g. 'Name a river'), and from round three on, roughly seven of the ten rounds carry a condition such as a region, theme, size or population threshold, flag colour, or letter rule. Conditions narrow what's accepted but never change how an answer scores.

Spelling is corrected rather than punished, and the correct spelling is shown. Wrong or out-of-scope answers cost nothing but time — the game explains exactly why an answer failed (wrong category, outside the region, missing letter) — and you can skip any round.

Beyond the daily, Endless mode draws fresh prompt sets as often as you like. The game tracks dives played, current and best streaks, average score, best daily score, average obscurity, and deepest find, plus a full archive of past dives with round-by-round review.