# Unity Ads SDK integration guide for Unity developers

> Integrate Unity Ads into your Unity project. Install the Advertisement Legacy package in the Unity Editor, initialize the SDK, and implement interstitial, rewarded, and banner ads with C# scripts.

> **Note:**
>
> Starting April 1, 2026, apps that monetize with Unity Ads through direct integration through the Advertisement Legacy Package might see reduced ad performance. To avoid reduction in performance, switch to integrating Unity Ads as a bidder.
>
> The Unity Ads network will continue to support and provide fill for all apps using direct integration. However, to maximize revenue and performance, the recommended best practice is to [install the Ads Mediation package for LevelPlay](/grow/levelplay/sdk/unity/package-integration.md.md), Unity's ad mediation platform.

The following topics detail how to implement Unity Ads in your made-with-Unity game.

[Install the Advertisement Legacy package in Unity](/monetization/sdk-integration/unity-sdk/install-sdk.md): Install the Advertisement Legacy package to enable ad monetization and connect your Unity project to the Unity Ads dashboard.
[Initialize the SDK in Unity](/monetization/sdk-integration/unity-sdk/initialize-sdk.md): Initialize the Unity Ads SDK with your Game ID to enable monetization and access Unity Ads APIs.
[Implement interstitial ads in Unity](/monetization/sdk-integration/unity-sdk/interstitial-ads.md): Load and display interstitial ads in your Unity project between gameplay moments or app transitions.
[Implement rewarded ads in Unity](/monetization/sdk-integration/unity-sdk/rewarded-ads.md): Load and display rewarded ads in your Unity project, then grant in-game rewards upon ad completion.
[Implement server-to-server redeem callbacks](/monetization/sdk-integration/unity-sdk/s2s-redeem-callbacks.md): Set up server-to-server callbacks to securely validate rewarded ad completions and prevent fraud.
[Implement banner ads in Unity](/monetization/sdk-integration/unity-sdk/banner-ads.md): Load and display banner ads in your Unity project in a fixed screen position.
[Test your Unity Ads integration](/monetization/sdk-integration/unity-sdk/test-integration.md): Enable test mode in the Unity Ads dashboard to safely verify ad functionality before publishing your app.
[Unity Ads SDK API reference (C#)](/monetization/sdk-integration/unity-sdk/api/unity-api.md): View the Unity Ads SDK public API reference for classes, methods, and properties available in C#.