pennant

A WORLD BUILT TOGETHER

A little credit.
A world of thanks.

The people, data and open-source projects behind Pennant’s geography games.

Country database

Country data © mledoze/countries contributors. Modified by Pennant. Available under the Open Database License (ODbL) 1.0. Snapshot: September 12, 2026.

The 195-country game catalog includes Pennant’s aliases, display names, capital corrections and game border exclusions. The game’s scope, country labels and simplified map are for geography practice.

Download the bundled modified country database · ODbL license · Provenance and hashes · Source snapshot

Flag artwork

Flag artwork © 2013 Panayiotis Lipiridis and flag-icons contributors. Used under the MIT License. Pennant uses the bundled SVG flag artwork for the quizzes, drawing references and country badges.

MIT license notice · Per-asset provenance and hashes · Source snapshot

Maps and outlines

Made with Natural Earth. Natural Earth map data is in the public domain. The bundled outline database derives from Natural Earth 5.1.1, 1:10m administrative country boundaries, with simplification and small-country preservation for Pennant’s games.

Download the bundled map database · Natural Earth license and credits · Map provenance and hashes · Natural Earth terms

The world map uses the Equal Earth projection. Distances use great-circle kilometers between reference points; Hot & Cold direction clues follow the displayed flat map. Country drawings use a local silhouette projection for visual practice.

Open-source software

Pennant web uses React and React DOM, Lucide icons, and D3 geography utilities, with Vite for the local build. The runtime distribution includes React’s scheduler and D3’s supporting packages.

Read the bundled runtime software license notices. Lucide’s ISC notice also acknowledges the Feather portions originally created by Cole Bemis under MIT.

Pennant

Game design, daily challenges, illustrations and the Pennant experience are published by STONEG LLC. Daily generation follows the native Pennant seed format; drawing comparisons are approximate practice feedback performed locally.

Questions or corrections? Email agraysonstone@gmail.com.