MG FlappyCube is an addictive side-scrolling game where players control a cube character navigating through a series of obstacles. The cube automatically falls due to gravity, and players must tap the screen to make it "flap" upward. The challenge comes from timing these taps to navigate through gaps in vertical pillars that constantly appear from the right side of the screen. Each successful passage through a gap earns points, while colliding with any obstacle or the ground ends the game. The difficulty increases over time as the speed gradually increases and obstacle patterns become more complex.