Ok so this just happened to me again last night. Same game as before and so far the only one, but I have far more games than I play regularly. Anyway, when it happened last night, I kind of glitched it and it started but it stopped after the first attempt to close and reopen the app. I had just failed a level and the do you want to continue came up with another option to watch an ad for some bonus gems. Like many people I'm sure I usually opt not to watch the ad but while the screen was up I shifted in my seat which caused the phone to auto rotate to landscape and back. The sound appeared to be from the ad that played when I did this so it is coming from the app for sure and was related to the ad that played. I noticed a couple of things. The music played on a loop after the ad had finished and it didn't matter that I had other audio playing, YouTube in PIP, which is unusual since the device almost always pauses whichever is selected last. I will sometimes allow the ad to play and just restart my YT video so I don't have to listen to the monotony of game music but they played together. What does this mean? That's rhetorical, if we had the answer we wouldn't be talking about now. I'm just saying it feels like the ad engine is broken. So while we may not be playing the same game or even one by the same developer many of these games use similar or the same ad engine. So if there was something up with the ad engine that would explain why I don't see it in other games, and why you and I see it in different games. It would also explain the timing, with us both seeing it within the past few days, if the ad engine updated recently. While we could contact our respective developers, it's a free game meant to drive revenue by delivering ads, I just don't see us getting favorable responses complaining about ads, if we got any response. I mean feel free to try, by all means be yourself. As far as I'm concerned, my issue goes away so I'm not going to worry too much about it. In a few days to a week the ads will change and perhaps when that happens the issue will resolve itself.