Game sound effects themselves mutated

retro computer game effects for a film project or Flash game requires? The open source program "sfxr" creates an almost infinite number of them without having to first sound libraries or ransack the C64 simulator anschmeissen and sampling should be. There are requirements such as laser or explosion, get to taste the basis of the 22 registers can change or mutate or you can choose one of the random effects from the match and then to his taste for - then just export as a "wav" file and ready.