Konami Digital Entertainment today announced Contra 4 for the Nintendo DS has shipped to retail outlets nationwide. Celebrating the 20th anniversary of the popular action franchise, Contra 4 features 2D side-scrolling action that recalls the retro feel of the original fan favorite with the added bonus of massive battles that utilize both screens of the Nintendo DS.

Taking place two years after the events of Contra III: The Alien Wars, Contra 4 forces our heroes into battle against an army of alien invaders, including the return of the terrifying Black Viper. Players must dodge, shoot, and jump over obstacles and enemies coming at them from every direction. Contra 4 introduces a grappling hook accessory that provides players a means to grab onto structures above, allowing them to move seamlessly from screen to screen on the DS. Pushing the limits of the Contra franchise to new heights, the grappling accessory also grants players the strategic use of environmental elements for timely escapes, better vantage points for devastating attacks and it becomes crucial in defeating the massive bosses that take up both screens of the Nintendo DS.

Contra 4 offers cooperative gameplay that allows up to two players to join forces and defeat Black Viper's alien army for the continued existence of mankind. Recruit a friend and let the battle for Earth commence!

Contra 4 is rated "T" for Teen and is now available on the Nintendo DS in retail outlets nationwide for the SRP of $29.99.