I liked the atmosphere of this a lot; the music contributed a lot, as did the cool lighting effects.
I had some trouble figuring out what to do until I went back and reread the description to see that I have to click on buildings to do things. I placed some traps and the first wave of rats came, and then when they were all gone, nothing else happened. I'm not sure if this is a bug or just the end of the game? I tried it twice and got the same result. Though in both cases, one rat got through.
Speaking of, there was a delay between clicking on the trap and it activating; I hear one click, and then a second later, another click and the animation. Is that deliberate? I found it very difficult to time it, especially with the drunken fist style movement of the rats. Maybe just me?