I play this on my phone. I paid $2.99 for the game. I am not the kind of person to keep doling out money for a game I already paid for. They constantly want me to purchase new plants and power ups, etc. I don't mind so much, I mostly ignore it, but I swear some of those levels are meant to be impossible without using power ups...power ups cost coins, and if you don't have any coins to spend on power ups, guess what? You are stuck on that level until you go back and earn some coins on some old levels. That's when it bothers me, when I feel like they purposefully built the levels to squeeze money out of me. It would be different if I got the game for free, but I already paid for the game. Does this bother anyone else?