They Came In Peace!
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Change History
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1.0.0  10-10-2009  D Lord
Initial revision.

1.1.0  16-10-2009  D Lord
Added hit status for aliens and explosions.
Added hit status for saucer and explosions.
Added ship engine animation.
Added starfield effect and removed 'green bar'.

1.2.0  26-10-2009  D Lord
Fixed hiscore save.
Increased speed of ship missile and amend 'top of screen' collision detection.
Increased speed of alien bomb.
Increased speed of saucer.
Added bonus life mechanism.

1.3.0  28-10-2009  D Lord
Slightly reduced the saucer speed (it was too fast).
When possible, select aliens near the ship to be firing.
Attempted to adjust the alien speed build up.

1.4.0  29-10-2009  D Lord
Altered the alien speed adjustment so its a little better now.
Once a wave of aliens is cleared the next wave start a row lower down the screen.
Tried to fix the hiscore saving - AGAIN!
Added hit status for ship and explosion.
