Base Defence: Call of Duty Zombies Mash-up Pack is a W.I.P Sound Mod that replaces 5 files: RoundBreak.mp3, WaveBegins.wav, WaveEnded.wav, Track6.mp3 and Gameover.mp3 while still trying to keep the feel of base defence aswell ENJOY! Also please leave a rating and/or a comment about what liked or didn't like about this, thanks.