Full screen impact, timed to natural breaks.
A full screen ad shown at natural breaks in the app flow. The format earns through coverage and scale, and loses through bad timing, which is why the placement rules and caps matter as much as the demand.
Illustrative placement
What it is.
An interstitial is a full screen ad presented at a natural break in the app flow: between levels, at screen transitions, or after a task completes. One placement accepts static, video and playable creative types, and the auction picks the creative that prices highest for that impression. Never shown mid-action.
The mechanics, in order.
Break is detected
The app signals a natural break through the placement you defined. The SDK requests an interstitial ahead of the break so it is ready on time.
Auction runs
The impression is offered to every eligible demand source; static, video and playable creatives compete on price.
Winner displays at the break
The creative shows full screen at the transition. Timing rules in the publisher policy decide when the close control appears.
Cap check for the next show
Frequency counters update, and the placement respects its caps before the next interstitial is eligible.
Where this format belongs.
Level ends
The canonical moment for games. The loop is complete, attention is released, and the next action has not started.
Screen transitions
Moving between major sections of a utility or content app. The user understands a pause; the ad does not fight an open task.
Task completions
After an upload, export or save. The app did its job; the interstitial does not interrupt anything half-done.
Never mid-action
Policy, not advice: interstitials may not interrupt active gameplay, typing, scrolling through content, or any in-flight task.
The numbers that ship.
Sizes and creative types, per variant
Sizes, video durations and supported creative types per variant, including MRAID rich media where the winning source supports it, are listed under the interstitial spec in the docs, alongside the close-control timing table referenced in the policy.
The rules this format is held to.
Timing rules and close-control requirements are defined in the publisher policy. Video interstitials must expose a close control within the policy window; the rewarded interstitial variant that skips the opt-in prompt is permitted only where the user experience matches the policy definition.
What each number tells you.
Show rate
How often a requested interstitial actually displays. A low rate points at load timing or cap configuration, not at demand.
Engagement
Interaction with the creative. Compare across creative types to see whether video or playable is winning the placement.
Retention impact
Watch retention cohorts when you change caps. If day-one retention moves, the caps moved too far.
Full screen at the right moment only.
Send your app flow and break points. Onboarding will time the interstitials to the transitions that already exist.
Static · video · playable · cap-controlled