Migrating from gamee-js

Every breaking change between gamee-js and gamee-sdk, with the mapping tables.

gamee-sdk is a ground-up rewrite of gamee-js. The wire protocol with the GAMEE platform is preserved, but the JavaScript API is breaking — there is no compatibility shim. This guide walks you through every change a game has to make when moving off the legacy gamee-js.

The two reference tables at the bottom — methods and events — are the lookup you’ll come back to.

1. Swap the install#

Drop the legacy gamee-js script tag (whichever URL you currently load it from), then follow the install page — it covers the zip download, the package.json link, the <script> tag flow, and the local-monorepo variant. The rest of this guide assumes you’ve completed those steps and can import { gamee } from '@gamee/sdk'.

2. Initialize#

gamee-js

gamee.gameInit('twoButton', {}, ['saveState', 'rewardedAds'], function () {
  console.log('ready');
});

gamee-sdk

await gamee.init({ capabilities: ['saveState', 'rewardedAds'] });
console.log('ready');

• No controller type, no controller options.
• Returns a Promise that resolves with the platform’s response (locale, country, save state, mission data, …) — see GameInitResponse.
• Capability list is validated; unknown values throw VALIDATION synchronously.
• init() is one-shot — see Methods → init is one-shot.

3. Do I need async/await everywhere?#

Short answer: no.

Fire-and-forget calls — updateScore, gameReady, gameStart, gameOver, gameSaveState, updateMissionProgress, logEvent, requestPause — can stay synchronous. They return a Promise<void> you can ignore:

gamee.updateScore({ score: 100, playTime: 30, checksum: 'sum' });
gamee.gameOver({ saveStateData: { highScore: 100 } });

Data-returning calls need await (or .then) — there is no other way to get the value:

const { videoPlayed } = await gamee.showRewardedVideo();
if (videoPlayed) grantReward();

These calls took a callback in gamee-js, so the async thinking is identical — only the syntax changed.

4. Events#

gamee-js

gamee.onPause = function () {
  game.pause();
};
// or
gamee.emitter.addEventListener('pause', function (ev) {
  game.pause();
  ev.detail.callback();
});

gamee-sdk

gamee.on('pause', () => game.pause());

const off = gamee.on('resume', () => game.resume());
off(); // unsubscribe

• All events are typed.
• start receives { resetState?, gameSeed? } directly as its argument — no more ev.detail.
• The SDK auto-acks every event; you don’t call ev.detail.callback() anymore.
• Subscribe before gameReady() — see Events → subscribe first.

See the events page for the full payload reference.

5. Callbacks → Promises#

Every gamee-js method that took a callback returns a Promise in gamee-sdk.

gamee-js

gamee.showRewardedVideo(function (err, data) {
  if (data?.videoPlayed) grantReward();
});

gamee-sdk

const { videoPlayed } = await gamee.showRewardedVideo();
if (videoPlayed) grantReward();

6. Controllers are gone#

gamee-sdk is fullscreen-only. The gamee.controller.* subsystem (OneButton, TwoButtons, FourArrows, FiveButtons, SixButtons, Joystick, JoystickWithButton, Slider, Touch, …) no longer exists. Wire input directly:

window.addEventListener('keydown', (e) => {
  if (e.code === 'Space') player.fire();
  if (e.code === 'ArrowLeft') player.left();
  if (e.code === 'ArrowRight') player.right();
});

document.addEventListener('touchstart', (e) => {
  const touch = e.touches[0];
  player.moveTo(touch.clientX / window.innerWidth);
});

The controller-replacement table at the bottom maps every old controller to its DOM equivalent.

7. Errors#

gamee-sdk introduces GameeError with typed .code values. Every failure mode is one of seven codes — see the error handling page for the full catalog.

import { GameeError } from '@gamee/sdk';

try {
  await gamee.gameSaveState({ level: 3 });
} catch (err) {
  if (err instanceof GameeError && err.code === 'CAPABILITY_MISSING') {
    // declare 'saveState' in init()
  }
}

8. Lock down origins on web (recommended for production)#

const sdk = Gamee.createSdk({
  allowedOrigins: ['https://games.gameeapp.com'],
});

Without allowedOrigins, the SDK uses '*' and logs a warning on first use. See config.

9. Drop the loading-progress reporting#

gamee.gameLoadingProgress(pct) is gone — render your own loading UI inside the canvas / DOM. The platform no longer cares about progress callbacks.

Reference#

Method map#

Event map#

Capability map#

Controllers → native input#

What’s gone#

Four gamee-js capabilities and several methods/events did not carry over. Either the platform stopped supporting the feature, or the API was an unimplemented stub. Quick rationale for each: