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Alien Version 1.2 with Sound!
August 11, 1997
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Alien is an old HP48 game, the author of that version got the idea from an
old c64 game.  It is a rather simple shoot'em up game and the story behind the 
game is as follows: Unfriendly (most aliens are) aliens have invaded the earth 
and the only one who can stop them are you. To assist you in your battle, the 
russian experts have developed a new powerful (and leathal) weapon, the blaster. 
But, as you known, the Ruble isn't what it used to be and therefore, the scientists 
could only afford the version with limited firecapacity. You can only have one shot 
in the air at the same time. And what's even worse: the aliens have gotten 
hold of the very same weapon. And they're continually making their shields 
stronger and stronger. Stop them before they reach mother earth!

After completion of each level, the shields of the aliens become more powerful
and so you have to shoot them more times to kill them.

It makes noise when you hit an alien or pass a level, but you need to fashion
some sort of device so that you can hear it (the procedure is the same as for
sound on the TI-85, so there are many places where you can find instructions
on how to do this) I might add an option to turn the sound off so that there
is no little pause while it is making noise.

If you hit an alien bullet dead on (none of this grazing stuff :) both bullets
will disappear.

Keys: 	Left and Right to move your blaster, Clear to quit, 2nd to shoot, Mode to 
	pause and view the Level and Score (you get a point every time you hit an 
	alien, there is no high score list, but perhaps I will add that)

Known Bugs/Designed Features:
	-The aliens have absolutely no AI, their shots are entirely random
	 (although it does sometimes seem that they do have some sort of anti-
	 intelligence as they often direct their fire where you aren't!)
	-sometimes the shot seems to pass through the alien, but it really doesn't,
	 it is just an illusion (well sort of, but we won't get into that :)

Based on the hp48 game by Jonas Lindstedt, Sweden.

Please send comments, suggestions and bugs!

Andrew Von Dollen
warn@geocities.com
waffy on IRC

Revision History:
 Version 1.0:
	-first release
 Version 1.1:
	-took out wasteful title picture
	-optimized quite a bit, bringing the size down to 1281 bytes! (still could
	 stand for a little work)
	-includes source (uncommented, but I may comment it someday)
	-changed the hit's required scheme, now the number of hits required equals
	 the level shifted right one bit, so if you don't find this game entertaining,
	 at least you can learn a little about bit shifting :) (level 1, contrary to
	 the above stated pattern, still requires 1 hit, as 1 shifted right equals 0
	 and we can't have that)
 Version 1.2:
	-fixed a few minor bugs
	-chopped a few more bytes off
	-commented source code (although not extremely so)