Okay, money no object, at least up to $25, what is THE best top down shooter for the iPhone? I have a gift card and I love to play these things. Well, universal as I have an iPad too.
It's something like Centipede, where the bad guys come down from the top and your ship is at the bottom. Just think of Galaga times a thousand. I found a few that I spent my gift card on. Awesome games.