The gap
Single-screen climbers look simple but need slope physics, ladder rules, hazards that fall between platforms and a way to test every screen without playing it by hand.
Game templates
Ladderlorn Game Template
The complete source of Ladderlorn, a single-screen arcade climber with four screens, sloped platforms, ladders, lifts, conveyor belts and a bot that plans routes and dodges hazards.
- 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 gives four working screens as data, shared hazard code and a bot that climbs every screen in the smoke test.
How you use it
Unzip, serve the folder and open index.html, then edit game.js; npm test 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 your own retro climbing game, or a base for a single-screen platformer with ladders and lifts.
- Learning how a complete single-screen arcade climber 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
Screens as data
Each screen is a list of platform segments, ladders, lifts and items; move a ladder or tilt a girder by changing one row.
A bot that looks ahead
The bot routes over platforms, ladders and lifts, then simulates the hazards for 40 steps to choose between walking, waiting, backing off and jumping.
No build step
Plain JavaScript and Canvas 2D; open index.html through any static server and edit game.js.
A smoke test
A headless Chrome test loads the game, checks the console, presses keys and taps, and lets the built-in bot play a run to its result screen.
Gallery
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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
- v1.0.0
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 Ladderlorn 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.
