Creatures Dev Net. wrote:
The Creatures 3 engine uses ordinary WAV files to produce the sound effects in the game - this means you can use many freeware or shareware tools to create samples.

The quality of the sample will affect how many sounds can be played at any one time. Because the game uses a buffer of a fixed size to store all samples that need to be played, if you produce a sample that is very high quality you may find that it doesn't play when there are a lot of other sounds playing at the same time. Finding the compromise between quality and size can be daunting but nearly all of the samples in Creatures 3 are recorded at 32,075Hz, 16bit Mono - with no noticeable degradation on the samples.