What can one say about this game that people don't already know? Its probably the best vertical shoot em up on the Master System, if not the best top 3 easily. It has lots of sprites on the screen which is impressive for a SMS game, lots of powerups and there are even choices about the powerups you can have.
The boss battles are also impressive. The sound is awesome and today with emulators you can even choose to play with FM sound which adds an extra level to this game. Play it, you wont be sorry!
Get extra lifes
Press DOWN,RIGHT,DOWN,DOWN,LEFT,RIGHT,UP,RIGHT at the title screen to start or continue the game with 9 lifes.
Bonus level
Successfully complete the game, and choose the continue option to begin at Level 00.
Sound test
Press UP,DOWN,UP,LEFT,LEFT,DOWN,RIGHT,UP and then 1 or 2 at the title screen to get to a sound test page.
Disable FM sound
This will disable FM sound when playing with a FM sound chip. Hold UP+LEFT on Controller 1 and DOWN+RIGHT on Controller 2 when you turn on the console.