I can't really determine whether or not this gameplay is decent, or how interesting the levels are, because there is an advertisement about every 2 seconds which blocks the whole screen, and is very hard to exit out of. However, that isn't the worst aspect of the ads. The way it is laid out, there is a permanent ad at the bottom of the screen which completely blocks your controls except for "move up," but you start on the top, so that means you cannot even "move up," you can only sit there and wait for the zombie to eat your brains. I tried multiple ways to get the ad to disappear, but I got tired of the 30 fullscreen ads that I would have to exit out of throughout the first level duration, and therefore I was not able to succeed. I understand ads in a free game, but when the ads make it impossible to play, you have to wonder what idiots are paying you to advertise their crap, and why you would even bother creating the "game" in the first place.