CHANGLOG
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* 2 levels (City, Asteroid Field), Score, Level Start, Title screen and ending screen
* Enemies now drop power ups ( yellow = weapon upgrade (4), green=health, white=free life, white=useless )
* Still no Models, Sounds or Music
* Purple Mid-Boss (stops stage until killed)
* Basic particle effects
* GRRLIB plasma example in background.
* New destructible objects, Ground plain, clouds, grass, smoke animation, gravity, death spiral
* New HUD: Your health bar is Green. Enemy health meter is the color of the enemy and is in the center.
* Blue box is end of stage marker
* Improved frame rate, added on screen counter
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