Akkanvader/Gameplay

Controls

 * Joystick: Use the 2-way joystick, to direct your chosen ship along the bottom of the screen; none of them can wrap round from one side to the other.
 * Firing Button: Use this button to make your chosen ship fire bullets up at the invaders; holding it down charges the shot (much like Apollo's sword in Namco's Phelios), and upon releasing the button the ship fires a more powerful shot up at the invaders. Every ship has their own unique type of shot.
 * 1 or 2 Player Buttons: Push these buttons to begin the game as player 1 or player 2.

First-player pilots
Sayo-Chan originally appeared in KiKi KaiKai back in 1986, and has also appeared in the seventh stage of Space Invaders DX's "Parody Mode" in 1994.