Codewisp game builder
Catalog of all 198 YC Winter 2026 companies + 18 working Claude Code Skills inspired by the ones an open-source tool can replicate. Inspired by, not affiliated with.
npx -y skills add riteshkew/yc-skills --skill codewisp-game-builderAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
One thing to look at
- 0 stars0 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.
What its author says it does
Copied from the file, not written here
From a natural-language game description, scaffold a complete playable browser game as a single index.html using kaplay (kaboom.js successor) loaded via CDN — no build step, no dependencies, open in any browser.
SKILL.md
2.5 KB, as published. Nobody here has run it
Workflow
When this skill triggers, follow these steps in order.
Step 1 — Capture the game description
Ask the user to describe their game in plain English. Good descriptions include:
- What the player controls and how (keyboard, mouse)
- What the objective is (survive, collect, reach a goal)
- What ends the game or increases the score
- Any enemies, obstacles, or power-ups
Example: "A game where you move a player left and right to dodge blocks falling from the top. Score goes up the longer you survive; getting hit ends the game."
If the user is unsure, suggest the dodge-blocks starter from examples/input.md.
Step 2 — Run the engine
With cwd set to the skill root (skills/codewisp-game-builder/), run:
node scripts/gen-game.mjs <description-file> <output-html-file>
Or pipe the description directly:
echo "Your game description here" | node scripts/gen-game.mjs - output/index.html
The engine writes a single self-contained index.html that:
- Loads kaplay via CDN (
https://unpkg.com/kaplay@3001/dist/kaplay.js) - Initialises the game with
kaplay(...) - Defines scenes with
scene(...)(menu, game, game-over) - Spawns game objects matching the description
- Runs a main loop via
onUpdate(...)with movement, scoring, and collision - Handles keyboard input via
onKeyDown(...)
Step 3 — Tell the user how to play
After the file is written, instruct the user:
Open
<output-html-file>in any browser (double-click or drag into Chrome/Firefox/Safari). No server, no build step required.
Step 4 — Iterate
Ask whether the user wants to change the game. Common refinements:
- Add a high-score tracker
- Increase difficulty over time (faster blocks, more blocks)
- Add power-ups or lives
- Change the art style (colours, shapes, sizes)
Update the description and rerun Step 2 to regenerate. The file is fully overwritten each run.
Example
See examples/input.md for the dodge-blocks starter description and examples/output/index.html for the generated game.
Run the example yourself:
cd skills/codewisp-game-builder
bash examples/run.sh
The script generates examples/output/index.html and writes a verification report to examples/output.md.