Gameplay
Players assume the role of a pilot of a futuristic fighter jet trying to rescue fellow pilots trapped in different time eras. The player's jet remains in the center of the screen at all times, and the eight-direction joystick causes their jet to rotate to face in that direction, causing the screen to scroll in that direction to present forward motion.
In each level, players battle many enemy aircraft and the occasional stronger aircraft. After a fixed number of these aircraft are destroyed, as displayed on a bar at the bottom right of the screen, a mothership appears. Once the mothership is defeated, they move onto the next time period. Parachuting pilots will occasionally appear and award players points if collected.
There are five levels: 1910, 1940, 1970, 1982/1983 and 2001. After the fifth level is finished, the game repeats thereafter.
Extra lives are given at 10,000 points, and per 50,000 scored up to 960,000; thereafter, the game goes to "survival of the fittest" mode.
Fighters are destroyed if they collide into bullets, enemy ships, bombs or missiles. Game ends when their last fighter is destroyed.