World Geography · Countries, Capitals & US States
Every continent, every country, every capital, plus all 50 US states. Study the maps, practice names and capitals, and test yourself, with adaptive weighting that focuses you where it counts.
Auto-swap replaces a mastered country with the highest-weight eligible one, shrinking the active set only when none qualify. Auto-retire just shrinks the active set; mastered countries drop out. Full explanations live in the tab.
Everything that shapes a Practice round lives here: how many places are in play, the two automatic mastery rules, and the pool of places you can be asked about. The controls below are the same ones behind the More Options button on the Practice tab. Change them in either place.
Every place carries a per-session weight that starts at ×1: a right answer cuts it by a quarter (×0.75), a wrong answer or a peek doubles it. Questions are drawn in proportion to these weights, so the places you struggle with come up more often.
What it does: sets how many places from the current scope are in the rotation; everything else sits on the bench.
Why it's useful: a small active set (around 10) repeats each place often enough to stick. Master those, then grow the set or let the rules below rotate in fresh material. Shrinking benches your most-answered places first (all-time); growing brings back your highest-weight benched places, so the set stays on what you know least. You can also bench or activate individual places with the switches in the table below.
What it does: once you answer a place correctly this many times in a row in the current session, it drops out of the active set. A wrong answer or a peek resets its streak to zero.
Why it's useful: it clears away the places you've mastered so every remaining question lands where it counts. The active set shrinks toward zero as you work through it, a natural way to "finish" a scope in one sitting.
What it does: when a place's weight decays below the cutoff (you've answered it right enough times to count as mastered), it's swapped out for the highest-weight benched place still at or above the cutoff. The active set keeps its size and cycles in fresh material, shrinking only when no benched place qualifies.
Why it's useful: it's the "endless drill" counterpart to auto-retire: work through a whole continent a handful of places at a time without touching the controls. Lower cutoffs demand more proof of mastery before a swap; higher cutoffs rotate faster.
The country list always includes Kosovo and Taiwan (states with partial international recognition; neither is a UN member) and the Dutch Caribbean countries Aruba, Curaçao and Sint Maarten (autonomous constituent countries of the Kingdom of the Netherlands rather than independent states).
Every practice session and test you’ve completed. Tap a test to see its full breakdown.