Crawly is one of the 10 different songs that are played during a regular game. It is the eighth track that is played. The tracks are played in sequence starting from Tango Alpha Bravo and ending with Bigelow's Bungalow, at which point the list starts over from the beginning.
The track was composed by Stephen Rippy using a Boss DSS-330 synthesizer and an E-mu ESI-32 sampler. Finally, the mixing and editing was done using SoundForge. A MIDI version of the song was also composed in Cakewalk that was used when the game CD wasn't in your CD drive. It was also used in the demo version of the game.
Retrospectively Stephen Rippy considers this piece as one of his worst.
The song title has been confirmed by Stephen Rippy.