TSPMLThe Skibiti PolyModLoader

A mod loader for PolyTrack. Stable API, declarative mixins, and mods that survive game updates.

Zero-install playing

Open the portal and PolyTrack loads with the mod layer active. No downloads, no forks, no browser extensions. Mods run in your own browser against your own live copy of the game.

A stable API for mods

Mods subscribe to typed events (checkpoints, races, car input) and use registries (keybinds, custom tracks, audio overrides). They never touch minified game internals, so when PolyTrack updates, mods keep working.

Mixins for power users

Declarative JSON patches (before, after, around, replace, and more) targeting stable names like Car.controlCar, resolved through a per-build mappings file that refuses to guess when the game changes.

Honest safety model

Warn-only fairness labels, per-mod failure isolation, and plain-language disclosure. TSPML never redistributes the game and never pretends to sandbox what it can't.

TSPML in 30 seconds

For players. Go to tspml.vercel.app, wait for the game to boot, and add mods from the sidebar. You can paste a mod's files, import a mod from a URL, or open a share link someone sent you. Your mods persist in your browser and survive reloads. See Playing with mods.

For modders. A mod is three small files: a mod.json manifest, a JavaScript entrypoint that receives a typed api object, and (optionally) a mixins.json with deep patches. The getting-started guide walks you through all of it.

// A complete TSPML mod
export default (api) => {
  api.events.on('race.finished', ({ frames, isReplay }) => {
    if (isReplay === true) return; // that was a ghost, not you
    api.logger.log(`Finished in ${(frames / 60).toFixed(2)}s`);
  });
  return () => api.logger.log('bye'); // cleanup on unload
};