Unity is a game development framework that makes it very easy to develop games for mobile platforms. Today we're releasing a plugin to help developers show AdMob banner ads in Unity games developed for iOS and Android. This plugin is packaged as a Unity Package so integration with a Unity project should be very easy. The included README has a step-by-step walkthrough on getting started.
We remind developers to follow AdMob best practices when integrating ads into their games. In particular, we advise that you put ads on screens only where they won’t cause a dip in your app’s frame rate.
You can check out the AdMob Unity plugin on our samples page (Android | iOS). Please direct any questions or general feedback to our forum. You can also follow our Google+ page to stay up to date on all of Google's ads products.