Deep (Mind Loft)

Deep goes down one subject instead of across many. The day's topic is shown before you start, and the fifteen questions run from the surface, three easy ones anyone can answer, down to the last three, which are for people who really know the subject. Each question has four options and a twenty-second clock that keeps running even if you switch tabs.

One wrong answer or an empty clock ends the dive, and your score is how far down you got. Everyone gets the same fifteen questions in the same order, so the leaderboard is decided by the deepest dive, with ties broken on time.

A new topic arrives at midnight Eastern every day. If you prefer range to depth, Mind Loft's Streak asks forty questions across everything, and Atlas, Biz and Sport run the same one-life format on geography, business and sport.