Download the plugin from the official site. Then import the assets from the package.

Create a new application in the AdMob dashboard. There you will get all necessary IDs to link you game to the AdMob account. Each platform requires a separate application.

In Unity menu bar go to Assets > Google Mobile Ads > Settings... and provide all App IDs for each platform you are going to use.

Next you need to run **Play Services Resolver — you can do it in the menu bar: Assets > External Dependency Manager > Android Resolver > Resolve (for Android), or Assets > External Dependency Manager > iOS Resolver > Install Cocoapods (for iOS) to install required software.

The last step is to activate and to setup implementation code. Go to the Dashboard and click to Integrations tab. Here you need to add Google AdMob integration element. Use context menu to do it. If there is already AdMob integration, you can remove it or just modify it.

Please, pay attention, that the current implementation code supports only interstitial and rewarded ads formats. To activate them create Ad Keys and setup them with your own keys. You can create and find them in the AdMob dashboard.

Also select all the necessary ad formats you want to use in the Type Mask field.

The last step is to save changes. Click on the floppy disk icon in the right top corner of the Dashboard.

These are all manipulations that you need to do to get the AdMob plugin work.

Read more information about ads usage in the project in the next topic:

How Ads Works