The Ray Series is a series of Vertically Scrolling Shooter developed by the Taito Corporation (now part of Square Enix). The series is known for revolutionizing the concept of two attack layers, the first being on the same level as the player and the second is a lower level that can only be attacked by using a lock-on system.
Players are equipped with a forward firing shot and a secondary laser shot. The laser shot is controlled by a target in front of the ship, which locks-on onto enemies which pass over it. Once enemies are locked, the player can fire the weapon, which automatically tracks down any locked-on enemy and can hit enemies in the background.