Thank you for the kind words Abhilash! :)
(...) sort of difficult to play. (...) maybe lower the difficulty a bit.
I completely agree with you on this. I don't exactly have ?ber ninja skills when it comes to playing shoot'em up games myself, so I'm thinking I should add a few different difficulty settings, "easy" for people like me, "medium" for normal casual players and "impossible" for the hardcore shoot'em up fanatics.
One thing is certain, the game will start with easy aliens to kill, not like it is now. The big skull is meant to be a mid-level guardian thing, and by the time you get to that you should have some upgrades to help you. And I think you should be able to keep at least some of the upgrades after dying, I don't want it to be one of those games where you might as well start from the beginning again if you die.
P.S how did you make those sprites, i mean which software??
Most of them were drawn in Deluxe Paint 4 or 5 on an Amiga computer.
The background asteroid and the skull laser were drawn in Pro Motion which is similar to DeluxePaint. That's what I'm using these days, it is an excellent program for drawing and animating pixel graphics. It's a commercial product though, the current version costs $78.
GrafX2 is a free alternative, the old versions were for DOS but the new team working on it has ported it to Windows and other systems, version 2.2 was released on March 22, 2010.