Track X runs for 6:25 minutes followed by silence until 6:50 minutes where an uncredited bonus track, The End by Shachi appears, lasting 5:30 minutes.

The CD release of Killerwhale X contains unlockable bonus material including a Braille code message found on the inner sleeve of the album and a Morse code recording found at the end of Track X. Entering these codes on the Endor Recordings Killerwhale Mini-Site will gain access to exclusive wallpapers, extra features, original project files and samples.
Barcode: 5055506359843