Phrases such as “click the ads” or similar language are not allowed. Any compensation or other incentives to click ads are strictly prohibited. Additionally, incentivizing users in any way to click on links and/or non-AdMob ads is also prohibited, as it may train users to perform actions (such as clicking on ads) that cause invalid activity."
Does that preclude in-app incentives, such as giving the user virtual (fake) currency in a game in exchange for clicking ads? If so, how are rewarded video ads allowed? Is it specifically the click action, as opposed to other forms of engagement such as watching a video ad all the way through, that can't be incentivized?