Contra 4 (USA) (Japanese title: Contra: Dual Spirits) is an action-packed run and gun video game developed and published by Konami for the Nintendo DS in 2007. It is the fifth installment in the Contra series and the direct sequel to Contra III: The Alien Wars (1992). The game follows the story of two commandos, Bill and Lance, as they fight against an alien invasion on Earth. Players control either Bill or Lance as they run and gun their way through seven levels of intense action. The game features a unique dual-screen mode, which allows the player to see both the action on the top screen and their map on the bottom screen. This allows for quick navigation and strategy planning. Additionally, the game features new weapons, such as the Laser Rifle and the Spread Gun, as well as new power-ups and secrets. Players can also team up with a friend in local multiplayer mode for some intense co-op action. Contra 4 is a fast-paced and challenging game that is sure to keep action fans busy for hours. With its classic Contra gameplay and new features, Contra 4 is sure to please fans of the original series and newcomers alike.