This is really cool and fun, but I have to agree that sound would be cool, but then you'd have to have a feature to turn sound off, so in the end is it worth it? I guess generic sounds and original music could be added, maybe a random Gamzee with a HONK upon being hit. Really in the end that would be up to you, and you decided not to add sounds or music. If you decide to make a Whac-A-Huss 2.0 with added music that will be awesome, if not this game is still cool.