Formation Z is a 1984 side-scrolling shooter developed and published by Japanese game company Jaleco. Players control the transformable combat robot IXPEL, tasked with destroying the enemy's mobile base Gezerium. A core feature is the ability to freely switch between ground and aerial modes: in ground mode, the robot traverses land and fires ground-based attacks; in aerial mode, it transforms into a fighter jet, flying and launching air strikes. Players must adapt their form to level layouts and enemy types to maximize combat efficiency. The game includes a diverse power-up system that boosts firepower, defense, and speed, enhancing gameplay while adding challenge. With polished graphics, excellent music, varied level design, and balanced difficulty, it keeps players engaged for hours.