The game is particularly innovative by including a way to rotate the helicopter in 360 degrees, allowing the player to fire in any direction. Most of the time this is required to survive, as enemies not only come from the top of the screen, but the left, right, and bottom as well. Like other scrolling shooters, the game makes use of power-ups to improve a helicopter's firepower. Each player also has a "Special" Bar, which slowly rises whenever players collect the little "E" icons from destroyed enemies. Every time the bar fills, the player has an opportunity to unleash their helicopter's special attack which often is capable of destroying every enemy on the screen. The first 4 stages, either Alpine Armored Train, Submergence City, Sea of Cloud, or Marine Base, are chosen in random order. The last 3 stages, Asian Slum, Orbital Elevator, and Aerial Capital, are in a set order. Helicopters are: