The gameplay is good and so is the music. I think both the theme and special object implementation is lacking. The turret is just an enemy and the ads could easily be replaced by something else so they are not very meaningful. I did like that the ads were implemented in the story however.

Very cool gameplay concept, I can see it being a fun bullet hell if the kinks are worked out. One thing I would suggest is adding more info about how the ad mechanic works in the game description, as I was initially confused as to what placing an ad does, and that's the coolest part of the game. Good job guys!