First off this is a beautiful game. Im an artist and a very visual person, so the graphics alone convinced me to buy this game.
I've played this game and put it back down a number of times but I still can't figure out what I don't like about it. One thing is that the controls don't seem 'right'. It could be the auto-walk or possibly the drop firing (which I realize is where the game name comes from), but whatever it is it just doesn't seem to click.
I can't deny it's amazing graphics, smooth animations, cute characters, and the very fitting soundtrack, but with all of that said im just not crazy about it.
In conclusion I think I want to like this game more than I really do. If you're looking for a unique retro-styled arcade game then I think it's definitely worth the dollar, just don't expect it to compare it to the classics.