Testing

Test outside the app with the dev mock

Enable the dev mock and run your game in a plain browser. Then use the included interactive harness to exercise every method:

👉 Open the test harness

It shows an in-app vs dev mock badge and logs each SDK response, with buttons for getCoins, spendCoins, earnCoins, getCoinValue, getPlayer, and storage save/load.

Pre-submission checklist

Before submitting your game to Gamma Games, verify:

• Game loads and plays without the SDK (outside the app)
• After gamma.ready(), coin features are gated on gamma.isInApp
• getCoins shows the correct balance in-app
• spendCoins deducts and grants the reward only on ok: true
• spendCoins over the balance shows an error, balance unchanged
• Invalid reason (uppercase/spaces) is rejected
• getCoinValue returns usdPerCoin + display metadata
• gamma.storage.save persists across app restarts (in-app) and reloads (offline)
• gamma.storage.load returns null for a fresh player
• Saves stay under 100 KB and carry a schemaVersion
• The game shows friendly messages, never raw error codes
• The dev mock is disabled in the production build