Build buzzer-ready recall.
Practice clue-based rounds across history topics so names, events, eras, and context come back faster.
Competition prep app
The GHC prep app.
Prepare for the Great History Challenge and Geography Challenge with quick clues, quizzes, and flash cards students can revisit between study sessions and competition rounds.
Practice for competition day
Short sessions, stronger recall.
The Great History Challenge is fast-paced and buzzer-based, while the Geography Challenge rewards broad world knowledge. The app helps students build speed and confidence before they compete.
Know your world.
Review cities, countries, capitals, landmarks, and world wonders for the Geography Challenge.
Keep learning between rounds.
Use flash cards, memory hooks, and repeat review to turn missed clues into stronger next attempts.
Official competitions
Use the app alongside the challenge paths.
History
01
Great History Challenge
A nationwide, fast-paced academic competition that brings history into a game-show-style format for middle school students.
Visit Great History Challenge
Geography
02
Geography Challenge
A national geography competition for curious middle school students who want meaningful ways to engage with world knowledge.
Visit Geography ChallengeCordelio Games
A home for current and upcoming games.
The games area now has space for both the live History & Geography Challenge app and Pathscape, the next Cordelio puzzle game.
Available now
01
History & Geography Challenge
Quick history and geography clues, quizzes, and flash cards for competition prep on iPhone and Android.
Download GHC
Coming soon
02
Pathscape
A calm arrow-clearing logic game with 1,000 campaign puzzles, Daily Challenges, shareable codes, Practice, Weekly Journey, and Blitz.
Preview PathscapeReal app screenshots
Built for practice, study, and quick returns.
Available now on iPhone and Android
Practice before the challenge.
Download the app for repeatable history and geography practice on the App Store or Google Play.