Nova Gas is a special grenade that is scheduled to appear in Call of Duty: Black Ops. Nothing else is known about it at this time.
Description; "Start with two gas grenades that impair movement, blur vision, and cause damage over time." makes it very likely that it acts like Tabun Gas or Stun Grenade with a damaging effect.
Trivia
- "Nova Gas" is also the name of a chain of fuel stations in Modern Warfare 2.
- Nova-6 might be the gas emitted from the grenades.