Controls
Move: Arrow Keys
Fire: Z
Bomb: X

Pause: Enter, Space Bar

Cheats

5 Bombs:
At the title screen, select \"New Game\" while the background is flashing white. If timed correctly, you\'ll start with 5 bombs instead of 3.

Hidden 1UP:
On stage 3, just before you reach the open harbour you\'ll see a blue box with a \'?\'. Don\'t shoot at it (if you have homing missiles or a wide-spread gun, let go of the FIRE key).

A tank will emerge from its base and run over the box, breaking it and releasing a 1UP.

Invisibility Mode:
Press CTRL During the takeoff sequence following stage 5. A textbox will appear in the lower-right hand corner of the screen; Type in \'go0gleypower\' and you\'ll remain invisible for 20-30 seconds of stage 6.

Grab the Ruby just as you return to normal for another 1UP.