There are 2 different versions of the game: free and premium. As the name suggests, in the premium version you won't get ads. However, in case of the free version, after level 4 you'll be given a choice either to watch an ad to unlock the next level or to buy premium version. As there are 17 levels in total, you'll be forced to watch 13 ads in order to unlock all the levels. You can't play the game offline as clicking the button to "watch the ad" while being offline won't load the ad and therefore won't load the next level. So playing offline in free version isn't an option. Since 13 ads would mean around 6,5 minutes of a timeloss in comparison with the premium version just because of having to watch the ads, how would the time spent on watching the ads be considered. If they're watched just to unlock the levels, would it be ruled out or would it be included in the final time? If the ad doesn't get included in the final time, how much of the ad time would be removed from the final time? Just from the point the ad begins or already at the screen showing the option to watch the ad to unlock the next level? Of course, if the ad was watched in any other purpose than unlocking the level, then it'd be included in the final time, but the ads that must be watched in order to unlock the next level could be an issue.