The WORLD/Alumina (the WORLD/アルミナ) is a single released by the Japanese band Nightmare.
The single was released on October 18, 2006. The single was related to Nightmare's fourth studio album The WORLD Ruler.
Four versions of the single were released:
- CD only with a Death Note cover (C Type)
- CD only regular edition
- CD with DVD featuring a music video for Alumina (A Type)
- CD with DVD featuring a music video for The WORLD (B Type)
All three versions of the single (A, B, and C Type) featured a CD with the following:
The edition with DVD (A Type) featured:
- Alumina music video
The edition with DVD (B Type) featured:
- The WORLD music video