Corto puts your geography knowledge on the clock. A place appears. Tap where it is on the world map, as fast and as accurately as you can. Every question scores up to 1,000 points: 800 for accuracy, 200 for speed. Ten questions, 10,000 possible. Getting close takes real knowledge of the world. Start free with World Cities and ten learning packs, then unlock 164 themed packs: capitals and cities, flags and airport codes, volcanoes, stadiums, world wonders, remote islands. Each pack is a new way to test what you actually know. Every pack is a lifetime purchase. Buy it once and it is yours, restorable on any device you sign in with. Corto has no subscriptions and no ads. Think you're quick? Challenge a friend head-to-head. Trade turns, match their score, and settle it on the map. They don't need to own the pack: your copy covers the whole match. Your best scores go to the Game Center leaderboards: one world ranking and nine category boards. Beat your best, and learn the world without noticing. Simple to learn. Hard to master. Endlessly replayable.