Monochrome Invaders

Here's a game i've made, called "Monochrome Invaders", and it's only 100 lines of code :)

EXE and data files
http://www.geocities.com/blitzamateur/Monochrome_Invaders.zip

Source only
http://www.geocities.com/blitzamateur/MI_Source.zip

Controls:

arrows : move
esc : quit
space : fire

Gameplay :

Destroy em all, literally
if you miss one, you lose
if you hit one, you lose

now, can you beat my best score, 2970 :P

If it's only 100 Lines and runs without media as well, you could post the source right here. Is there a Screenie somewhere?

There's media as well, but i can rustle up a screenie ( the graphics on this game are not impressive at all )

Here's a screenie of the main screen, unfortunately, i can't get any more pics right now

That's really ehrm - monochrome :) Tell me when you choose not to be White, are you black on black then? Or do you use monochrome raster patterns to get some kind of greyscale? Well this reminds me a lot of my monochrome time with the Atari ST.