Don't you just love the fact that the game's files are so easily available to us? This allows us to customize it to our liking, there is no need to buy new worms games or wait for 4.0. You can do whatever you want.
If you really put effort into it you can get masterpieces such as this:
Of course, you might not get similar results, as not all people have mspaint skills as glorious as mine.
How have you customized your game?