yeah I agree with the other comments. Its nice, very good graphics and such, BUT the difficulty is really high.. and why do the aliens come in 'cloaked' ?
the only thing I'd like changed is the dead flies should either change color or go 'splat' so I'm not trying to swipe at them as they fall off the screen.
Scorch is still better.. The major reason - the tanks take 5 direct hits before dying.... Why not be different? Try NOT tying the power of the shot to your health... That way you can still fight even when you got hit across the level..
Needs a gamepad.. Wow its really hard to play on a KB.. lol.. (Yes my suggestion is for a gamepad to materialize from my USB port so I can play this game).
Uhmm level 13 erased all of my nice "one hit kills" upgrades.. I got overwhelmed by the heavy bombers because my giant rockets would only hit the bombs..
should be about the minimum number of balls to knock over instead of shooting out the invidual blocks... its very boring, having to destroy the blocks without knocking it down is like having to destroy a car without blowing up the engine.