- Purchase the song pack "Emotion Samples 02" from the Black Market.
- In the middle of the Chaos chart, drag notes form the Sigma symbol (Σ), referencing the song's name.
- During certain parts of the song, beeping in Morse code can be heard, which spells out "SIGMA".
- This is a successor to the CODE NAME series, previously including Codename : Zero and CODE NAME : GAMMA.
- This is the only CODE NAME song not to use the same font for the Artist and Song title for the others.
- The Chaos chart of this song has the fewest notes of all the Chaos 15 songs.