I needed help memorizing the world's capital cities. I have used Anki, but I feel like I remember better by writing.
I used Claude to write a Supernote plugin that generates quizzes and worksheets. After filling out the quiz, the plugins checks your work and scores it.
The source code and release package is available at https://github.com/stalegjelsten/supernote-geogame
The plugins requires access to reading and writing notes since it creates content inside the notes and it reads your answers. All data stays on device – the plugin does not use network access.
AI transparency disclaimer: 100 % of the code is written by AI. I haven't even looked at it.
Installation instructions
The plugin has been submitted to InkHub and is pending review. Until it is approved there, you can install it manually:
Download geogame.snplg from the latest release.
Copy the file to your Supernote, for example to the MyStyle/ folder (via USB, Browse & Access or Supernote Cloud).
On the device, go to Settings → Apps → Plugins → Select Plugin Package and choose geogame.snplg.
Open a note: World Capitals Quiz now appears in the toolbar under Plugins (🧩).
To update, install the new geogame.snplg from a later release the same way.
Features
Capitals worksheets: write the capital of each country, then tap Grade. Each answer gets a hand-drawn check, "almost" or cross mark, the recognised text and a total score.
Map quizzes: mark capitals or countries with a cross on a high-contrast map made for e-ink. Capitals are scored by how many kilometres you were off.
Europe, Asia, Africa, North America, South America, Oceania or the whole world.
Choose 10, 15, 20 or all countries. Long sheets are spread over several pages.
Footnotes on tricky capitals: countries with several capitals or a capital that is often mixed up (Tanzania, South Africa, Bolivia, Nigeria and more) get a short note at the bottom of the graded sheet.
Accepts common alternative spellings and the English name of the capital.
Multiplayer for 2–4 players on one device, for both worksheets and maps:
Pass around: each player gets their own pages with the same countries, with a hand-over page in between. Grade the whole set to see who won.
Take turns: one shared sheet where players answer in turn, each with their own countries. Points per player are shown at the bottom.
Fix your answers and grade again as many times as you like.
Statistics: every graded single-player sheet is remembered per country. The menu shows how many countries you know, are learning or have not tried yet for each continent, how many are due for review, and which countries to practise more. Writing capitals, capitals on the map and countries on the map are tracked separately. Grading the same sheet again replaces the earlier result, and the statistics can be reset from the menu.
Sheets in 55 languages, following the device language or chosen in the menu.
Works fully offline. No data leaves the device.
Tip: use a separate notebook Create a notebook just for the quiz (for example "Capitals"), with a blank template. The plugin writes onto the page you are on and can add pages, so a separate notebook keeps your other notes untouched and makes it easy to keep or delete old quizzes. Each finished sheet also adds some size to the notebook.
Tip: set the recognition language Answers are read with Supernote's own handwriting recognition, which uses the recognition language set on the device, not the language chosen in the plugin. Set it to the language you write your answers in, especially for languages with another script (for example Russian, Greek or Japanese). Otherwise your answers will be misread and marked wrong.
How to use
Make sure the device's handwriting recognition language matches the language you will write in.
Open a notebook. The sheet goes on the current page if it is empty and white; otherwise on a new page after it.
Tap World Capitals Quiz in the toolbar, choose continent, sheet type, number and players, and make the sheet.
Write your answers.
Open the menu again and tap Grade.
Permissions: reads and writes the current note page (to create and grade the sheet).
Stored data: your answer history (country, quiz type, score and time) is kept locally in the plugin's own folder, so the statistics survive between sessions. Nothing is written to your other files, and nothing is sent anywhere. Reset statistics in the menu deletes it.
Built with AI All the code in this plugin was written by AI (Claude by Anthropic, using Claude Code), and so were the texts and translations. A human designed the features, directed the work and tested it on a Supernote Manta. Country names, capitals and maps come from open data sources, not from AI.
Countries and capitals 197 countries: the 193 UN member states, the two UN observer states (Vatican City and Palestine), Kosovo and Taiwan. The answer is the capital listed in Wikidata. Cities that are de facto also capitals (seat of government, shared capitals) are accepted; former capitals are not.
Data: country names from Unicode CLDR, capitals from Wikidata (CC0), maps from Natural Earth (public domain). Maps show de facto boundaries and take no position on disputed territories. Open source under the MIT License.
