The gap
Multiple-choice quizzes test single facts; a game about the order of events teaches how they relate in time, but needs a rule that stays clear on a phone.
Game templates
Yearmoss Game Template
The complete source of Yearmoss, a history trivia card game: grow a vine with the event that comes next and wither the ones time has passed.
- JavaScript
- Canvas 2D
- Web Audio
- Playwright
- Coming soon
Coming soon
Not published on its store yet, so there is no buy or download link. PN Scripts does not take payment for it here.
What it solves
What it is
This template asks only two questions about a hand of four cards, what comes next and what is already past, with one tap and one button, a drag or one key, and shows the true year after every move.
How you use it
Unzip, serve the folder and open index.html, then edit game.js; npm test runs the unit tests and plays it again in headless Chrome.
Source code of a real, playable game to reskin and learn from, with a smoke test whose bot plays it.
Who it is for
Use it when
- Publishing a history or general-knowledge game for a classroom, a museum or a quiz site.
- Learning how a complete history trivia card game (grow the next event, wither the past) is built in plain JavaScript and Canvas 2D.
- Building a branded mini-game for a client.
Built for
- Web and indie game developers who know some JavaScript.
- Developers who want a finished, tested game to build on instead of a blank canvas.
What you get
Events as data
Every event is one row with a theme, a year and its text in two languages; chapters are filters over that table, so new decks need no code.
A judge you can test
One pure function decides grow, skip or wither from the tip's year and the hand: equal years count either way, and the unit tests cover every case.
No build step
Plain JavaScript and Canvas 2D; open index.html through any static server and edit game.js.
Tests
Unit tests cover the rules core; headless Chrome tests (Playwright) check keyboard, mouse, drag and gamepad, the menus, saves, both languages and phones held sideways and upright, and the built-in bot plays a run.
Gallery
This file could not be loaded.
This file could not be loaded.
This file could not be loaded.
1 of 3
Specs
- Availability
- Coming soon
- Vendor
- PN Scripts
- Type
- Template
- Platforms
- JavaScript
- Pricing
- One-time purchase Price to be announced.
- License
- PN Scripts Template Licence 1.0
- Deployment
- Download (ZIP of source code)
- Maturity
- v2.0.0
Compatibility
| Platform or runtime | Supported versions | Tested up to |
|---|---|---|
| Node.js | 22.12 or newer | Not stated |
Stack
- JavaScript
- Canvas 2D
- Web Audio
- Playwright
The Yearmoss template is coming soon
The template is finished and tested. It is not on sale yet; this page will say where to get it when it is.
Coming soon
Not published on its store yet, so there is no buy or download link. PN Scripts does not take payment for it here.
Questions
Make and sell any number of your own games from it, and build games for clients. You may not resell or share the source code itself (PN Scripts Template Licence 1.0).
Any static web server to run the game, and some JavaScript. Node.js 22.12 or newer and Google Chrome run the smoke test.
No ad or portal SDK. The game text is in English and Bulgarian, chosen from the browser language. It is tested in desktop Chrome and a phone-sized Chrome viewport with touch, not yet on iOS Safari, Firefox or a real phone.
The code was written with AI assistance and checked by PN Scripts with automated tests. All visuals and sounds are generated by code; there are no AI-generated image or audio files.
It is not on sale yet. When it is, this page will link to the store; PN Scripts does not take payment on this site.
