Interstitial ad

Full-screen or pop-up ads that cover the interface of their host application or a web page. They’re typically displayed at natural transition points in the flow of an application or web page, such as between activities or during the pause between levels in a game. When an app or web page shows an interstitial, the consumer has the choice to either tap on the ad and continue to its destination, or close it and return to the app or web page.