Hahaha, something wrong with the Wii audience because we don't throw all our money away when we're expected to.
Nobody cares about Extraction's metascore. It's at least the 8th on-rails shooter on the Wii in only 3 years.
People are over it. If you want an on-rails shooter, you can get a used copy of House of the Dead: Overkill, Umbrella Chronicles, Link's Crossbow Training, Medal of Honor Heroes 2, Ghost Squad, House of the Dead 2 or 3 Return, or Chicken Shoot. But Wii fans are jerks because we wouldn't pay $50 for yet another on-rails shooter. I don't care how good it is; the genre is over-saturated, and yes, New Super Mario Bros. Wii came out at the same time with 4 player co-op 2-D platforming. For the same price you could get the first 4-player co-op platformer on the Wii or the 8th on-rails shooter on the Wii.