We've released an update that allows creators of maps to tweak the boosts that are currently only on Android.
What this allows us to do is give creators total freedom if they want the feature or not. These boosts were previously given through Ads, but are now accessible through gold if the creator wants it.
The creator can set the price of the boosts, as well as change the amount of health/speed the player receives from it.
We've also changed the Game Tier screen in edit mode, to now contain the new settings for the boosts.
Please report any issues in the bug forums,
or any feedback about the feature to the suggestions and feedback part of the forums :)