Flags, codes & trivia geography games
Sometimes the clue isn't a place, it's a symbol. Corto's Trivia packs flash a flag, an IATA airport code, a currency or a national motto, and you find the country it belongs to. Nine packs of the deep-cut stuff that separates map nerds from the rest.
Free to play. Always.
Corto is free to download, and it is not pay-to-play. No ads interrupt you, no energy meter runs out, no lives to wait for. Play as many rounds as you like. World Cities and the learning packs are free forever; the rest are a one-time unlock, never a subscription.
The 9 Trivia packs
- Airport CodesGuess the airport from its IATA code.
- Brand OriginsSee the brand, find the country it was born in.
- Country NicknamesSee the nickname, find the country.
- CurrenciesSee the currency, find the country.
- Dialing CodesSee the international dialing code, find the country.
- Domain CodesSee the country domain (ccTLD), find the country.
- National EmblemsSee the national emblem, find the country.
- National MottosSee the motto, find the country.
- World FlagsSee the flag, find the country.
How it works
Every pack runs on the same engine. A place is named, you tap it on the map, and you score up to 1,000 points per question on accuracy and speed. A game is ten questions, two minutes, 10,000 points possible. Play solo, or challenge a friend head-to-head over Game Center. Miss a tap and Corto shows you the right spot, so every round teaches you something.
Frequently asked questions
Which trivia packs are in Corto?
Corto's Trivia category has 9 packs: Airport Codes, Brand Origins, Country Nicknames, Currencies, Dialing Codes, Domain Codes, National Emblems, National Mottos, World Flags.
Is Corto free, or pay-to-play?
Corto is free to download and it is not pay-to-play. No ads interrupt you, no energy meter runs out, no lives to wait for. Play as many rounds as you like. World Cities and the learning packs are free forever; themed packs like World Flags are a one-time unlock, never a subscription.
What kinds of trivia clues are there?
World flags, IATA airport codes (200 of them), international dialing codes, country domain codes, currencies, country nicknames, national mottos, national emblems and brand origins. See the clue, tap the country.
Coming to the App Store, summer/fall 2026
Corto is free for iPhone, no ads, ever. Leave your email and we'll send one message the day it launches, nothing else.