Best free "side-scrolling" games

VISUAL - In gaming, side-scrolling is a style where the view follows the player character from the side as they move horizontally through the game world. The environment typically scrolls smoothly or in segments, revealing new areas as the character progresses. This perspective emphasizes continuous movement, timing, and exploration, often combining running, jumping, and combat. Side-scrolling is closely associated with platformers, action games, and beat ’em ups, providing a dynamic sense of progression while keeping the player focused on navigating obstacles and challenges along a horizontal plane.