COINFALL — the GX Hub Studio starter template
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A complete, hub-ready game in one folder. Play it, then make it yours.

Files
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index.html    the page. Loads the hub's Grokonians SDK, then game.js.
style.css     the hub's stone-and-gold skin; fluid layout for the hub frame.
game.js       the whole game plus the Grokonian bridge (read its header —
              the bridge pattern at the top is the part to copy).
logo.png      square 256x256 logo, under the hub's 200 KB cap.
manifest.json title/description/logo kept with the game (the hub reads
              "logo" from here; title and description go on the submit
              form, and keeping them here keeps them true).

The rules this template already obeys (the hub enforces them)
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- index.html at the folder root; every asset loaded with a relative path.
- No network calls, no remote code, no popups, no top navigation, no
  password or payment fields, nothing packed or obfuscated.
- Grokonians are awarded through a queue: at most 10 per earn call, at
  least 1 second between calls — the hub's exact caps.
- The score is submitted at run end with the hub's scores:submit message.
- The game runs identically with no hub around.

Make it yours
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1. Change the game: keep the Bridge object, replace the catching game
   with yours. The GX Hub Studio options catalog (options.json) is a
   board of genres, mechanics, controls, art and difficulty shapes that
   all fit these rules.
2. Run the Studio validator before you submit:
     python3 ../tools/validate.py .
   Fix anything it marks FAIL; read anything it marks WARN.
3. Package it (the validator runs again inside):
     python3 ../tools/package.py . -o coinfall.zip
4. Submit on the hub: sign in, Upload a game, use the Link form (host
   the folder anywhere https) — or the zip while zip uploads are on.
   A person reviews every game before it goes live.