---
metadata:
  - name: generator
    content: Diplodoc Platform v5.56.0
alternate:
  - https://yandex.com/dev/rtb/doc/en/ssp/interstitial-rewarded.md
  - https://yandex.com/dev/rtb/doc/ru/ssp/interstitial-rewarded.md
  - href: https://yandex.com/dev/rtb/doc/en/ssp/interstitial-rewarded.md
    type: text/markdown
    title: Markdown version
  - href: https://yandex.com/dev/rtb/doc/en/llms.txt
    type: text/markdown
    title: llms.txt
---
> **Documentation Index:** Fetch the complete configuration index at https://yandex.com/dev/rtb/doc/en/llms.txt

# Interstitial and rewarded ads

Fullscreen ads are RTB ad units that can display Text & Image ads, display banners, or video ads. The ad covers the entire screen and appears between a user request and content delivery, such as when a player moves to the next level in a game.

## Interstitial ads

Interstitial ads are fullscreen ads commonly served in mobile apps. Key features include:
- The ads are served during screen transitions, unlike fullscreen ads, which can appear anywhere.
- Popular sizes: 320×480, 480×320, 768×1024, 1024×768.
- The ads can appear as an image, HTML5 content, or video. Users can usually dismiss the ad right away or after 3–5 seconds.
- To speed up ad delivery, the SSP can precache creatives in the background inside the app.

### How it's passed in the request

It's passed in the `Bid Request` as a parameter with the `imp.instl = 1` value. 

For video ads, an additional parameter inside the `video` object can be passed: `imp.video.placement = 5` (interstitial placement).

### How to close Interstitial ads

Users must always be able to close interstitial ads:

- For banners (HTML5/MRAID): The publisher almost always requires MRAID support (`api: [3, 5, 6]`). MRAID includes a dedicated `mraid.close()` method. The creative renders a close button and calls this method, or the publisher's SDK renders its own close button over the banner.
- Close delay: The App Store and Google Play policies require the close button to appear almost immediately for static banners and within 3–5 seconds for video ads.

### Prohibited practices for interstitial ads

1. Unexpected ads: Interstitial ads must not appear while the user is actively interacting with the app, like steering a car in a game or scrolling a page.
2. No exit: Creatives that imitate system errors or feature fake, non-clickable close buttons designed to force accidental taps (fat-finger clicks) aren't allowed.
3. Auto-redirects: Creatives must not automatically open an app store or external site without a physical tap on the screen.

{% cut "What an interstitial ad looks like" %}

![](../_images/interstitial_example.png)

{% endcut %}

## Rewarded ads

Rewarded ads render in full screen and give users a reward for completing a view, such as unlocking a file or exclusive site content. The screen shows a timer that counts down the seconds until the reward is granted. If the user closes the ad early, they won't receive the reward. Rewarded ads have the highest completion rate (~95%+).

### How it's passed in the request

Under the OpenRTB 2.6 specification, the rewarded signal is passed in the `imp.rwdd = 1` field (default value is `0`).

The ad can transition into an HTML5 end card once the video completes. To support this, the publisher needs to pass MRAID support (`api: [3, 5, 6]`) in the bid request along with the video format.


{% cut "What a rewarded ad looks like" %}

![](../_images/rewarded-example.png)

{% endcut %}