I'm very pleasantly surprised. I'm usually no fan of TD games, b ut this one had me hooked after the first map. The graphics are simple and really look like some sort of audio editing software. The game is simple to grasp but steadily gets more difficult, which is always nice, a nice learning curve. There's also some nice variety to the music and the interface is clean and inviting. Great game, with a great, original concept. Excellent overall!