Rockstar’s ever-delayed L.A. Noire has been given its first trailer. Made entirely from in-game footage, the trailer takes a look at 1940’s Los Angeles, as a group of detectives investigate a variety of crimes.

From Rockstar:

Developed by Team Bondi in conjunction with Rockstar Games, L.A. Noire is a dark and violent detective thriller set against the backdrop of Los Angeles in the post-war years of the late 1940s, the most corrupt and violent period in the city’s history.

Based on groundbreaking performance capture technology that goes beyond traditional methods to render every subtlety and nuance of an actor’s facial expressions and emotions, L.A. Noire is the first game to truly explore what it means to be a detective, offering players the opportunity to solve crimes through a blend of classic action, clue-finding and interrogation, allowing players to analyze every subtle nuance of an actor’s performance in order to get to the truth.

L.A. Noire is set to release in Spring 2011.