IGN’s gone live with a video preview of LA Noire, detailing how events outside the game’s main story works. You’ll be free to roam Los Angeles, with 40 unassigned cases around LA that you’ll be able to attend to. Ongoing robberies, gunfights, car chases and more are all part of the CV. You can get the video below. LA Noire launches next week for PS3 and 360.