Fun game when you take the time to think your movements. I like that the icons are worms xD Good work on the UI and Art.
The only complaint I have is that the game depends too much on randomness, maybe displaying the "Next Line" of worms on screen could fix that, just like Tetris does.
Also I don't understand why worms are of a different color if they all interact in the same way, that was confusing at first.
Maybe adding different mechanics to the worms might make the game more strategic and interesting. For example, blue worms explode, green worms can merge diagonally, I don't know things like that xD