The first video game based on the hit investigation drama NCIS is now available nationwide. You can purchase NCIS for $39.99 on the PS3, Xbox 360 or Wii or for $29.99 on the PC.

NCIS lets you investigate four cases throughout the world. The locations range from an Atlantic City casino to a hotel in Dubai. Ultimately you'll discover connections between these cases and solve a much greater mystery. Each of these cases were written with help from the TV show's scribes.

You'll participate in every step of the investigtion. You examine crime scenes, perform autopsies, and interrogate suspects. Once you've pieced together the case, you'll track down the perps, too.

A batch of screenshots from the game are below.