Rewarded Popup is an ad format that appears when a user clicks on a specific element of your mini app and then takes the user directly to the offer page. This means that there are no ads between the user's click and the offer page, unlike an interstitial.
Inside the Telegram Mini App, it will look like this:
Insert script
The detailed manual on integrating a Rewarded Popup into your app can be found in this article.
Examples
More examples of the Rewarded interstitial usage may be found in the Code Examples article.