Rush'n Attack (originally titled Green Beret) is a foundational side-scrolling action game by Konami. Players infiltrate an enemy military complex during the Cold War to rescue prisoners of war and destroy a secret weapon. Armed primarily with a combat knife, you must skillfully steal secondary weapons like flamethrowers and RPGs from enemies. The game is celebrated for its high difficulty, requiring precise timing to jump over mines and dodge paratroopers across its six intense levels. It remains a legendary 'hardcore' classic of the Famicom era and a must-play for fans of arcade-style combat.