Randomised beeping sounds. Sounds like a "futuristic" computer. Generated using the incredibly useful sfxr http://www. Drpetter. Se/project_sfxr. Html (i pressed repeatedly on the pickup/coin button :).
Sample made in sfxr with layered sawtooth waves in harmony and sliding highpass and lowpass filters, then used as a note in sfozando to create a melody.
Sample made in sfxr with layered sawtooth waves in harmony and sliding highpass and lowpass filters, then used as a note in sfozando to create an uneasy melody.