This game is made by Irem in the year 1988. This is a sci-fi-shooter with spaceships. You move with the stick, with the first button you shoot, with the second you toggle the speed. The screen scrolls vertical, you fly from up to down. When you flying slow you shoot stronger laser, when you flying fast you must often shoot the enemies. There are extras in containers hidden. The extras are turnable cannons, guided missiles and protection shield. At the end of each level awaits you an endboss.

This game makes only for a short while fun. It is very hard to play although there is a continue-function. The gameplay is nothing new, it is a normal shoot-em-up. And why there is no 2-Player-Mode? But the graphics and music are good, you can play it for a moment. But it is only a moment, your lifes are very fast gone. Later there comes a big spaceship which ejects many ships to you. There is also an extra which gives you a satellite to assist you.
The controls are good, it is good to play. There is music in the game.

I played it the second half of January 2020