Best Offerwall SDK for Unity Games: SDK or Web Wall?

Which offerwall SDK is best for a Unity game?

The best offerwall SDK for a Unity game is the one that fits how your game stores currency. If your game has its own backend, both a native SDK with server-to-server callbacks and a web-based offerwall opened from a signed link work well, and the web option needs no plugin at all. If your game has no backend, an SDK that keeps the currency balance on the provider’s servers is the simpler start. Within those groups, compare offer coverage for your players’ countries, how reversals are reported, and the build requirements each SDK adds.

Common options for Unity, according to each provider’s documentation as of October 2026:

• Native SDKs with a Unity plugin: Unity Offerwall (formerly Tapjoy), AdGem’s Unity SDK, and BitLabs’ Unity SDK.
• Without an SDK: RevU, which describes an iframe, a hosted page, and a whitelabeled API across Unity, iOS, Android, and web, and Sharklio, which opens from a signed link. MyChips offers both an SDK and iframe or direct link options.

This is a guide to choosing. For step-by-step code, see How to add an offerwall to a Unity game.

Native SDK vs web-based offerwall in Unity

An SDK is a library you import into the project. A web-based wall is a page your game opens. What is an SDK? covers the general trade-off; here is how it plays out in Unity:

Build requirements are real work. Unity’s own Offerwall quickstart for Unity, for example, has you import a .unitypackage, enter separate Android and iOS SDK keys, add a component to your first scene, and wait for a successful connect before requesting content, and it lists minimum Xcode and CocoaPods versions for recent SDK releases.

Your options for showing a web wall from Unity

Unity’s Application.OpenURL hands a link to the operating system, which opens it in the default browser. On Web builds, Unity’s docs say it opens the URL in a new browser tab. Unity does not document a built-in in-game WebView for Android and iOS, so showing the wall inside the game usually means a third-party WebView plugin. Your three choices:

1. System browser with OpenURL. One line, every offer behaves as on the web, but the player leaves the game for a while.
2. In-app browser tab through a plugin, such as Custom Tabs on Android or SFSafariViewController on iOS. The player stays closer to the game and the browser still handles store links.
3. Full WebView plugin. The wall sits inside your own UI. Test JavaScript, file uploads, store links that must leave the view, and a visible close button.

Whichever you choose, Unity’s docs warn against passing a string from an untrusted source to OpenURL. Fetch the link from your own server and check that it starts with the provider’s domain before you open it.

The rewarded currency flow: credit on the server

Unity Offerwall’s documentation describes the two models every provider uses in some form. With provider-managed currency, balances live on the provider’s servers and you need no backend. With self-managed currency, balances live on your servers and the provider calls a callback URL you supply. Unity recommends self-managed currency as best practice for its extra features, notes that only self-managed supports several currencies in one app, and says you cannot migrate back to managed currency later. Decide before launch.

If you run your own backend, the safe flow looks like this:

1. The player taps Earn, and the client asks your server for a link or an SDK session for that player ID.
2. The player completes an offer. The provider sends a signed server-to-server callback to your server.
3. Your server checks the signature, skips any transaction ID it has already processed, and adds the currency.
4. On a reversal callback, your server removes the currency or marks the debt.
5. The game reads the balance from your server the next time it syncs.

Never add currency because the client says an offer finished. A modified client can say anything. Server-to-server tracking explains why the callback is the only trustworthy signal.

What to compare between offerwall providers

Set the gem price of offers with the virtual currency calculator, and see Offerwall vs rewarded video if you are deciding between the two formats.

Keep the wall optional

Apple’s App Review Guidelines, in section 3.2.2(x), say apps must not force users to rate or review the app, download other apps, or take other store-related actions to access functionality, content, or use of the app, while they may incentivize specific actions within apps, such as completing a level or watching an ad. Never gate core gameplay behind offers, and never reward ratings or reviews. Monetize a mobile game with an offerwall covers placement and store policies in more detail.

Frequently asked questions