Cute, in a semi-explosive way.
It's a neat game, I like how you have to plan it out a little, to avoid ships hitting your planet when you are trying to make them collide.
I found it a little bit challenging, it'd be nice if there was more of a tutorial, and more power-ups, like a sheild.
Also, it'd be nice if there were different kinds of power-up, like the basic end-of-level heal, and then something that drops out of enemy ships.
I would have liked it more if there was levels of difficulty, as not everyone plays as well as others, this would make the game more enjoyable for more people.
I found the panning extremely challenging, and when I tried to enter fullsceen it would not let me unpause, which was very frustrating.
Perhaps make the game zoomed out a little, and cut back on the little ships and rockets so you don't have to pan as much, because I oftentimes found myself losing health because I couldn't click the ship I wanted because the pan controls would launch me too far away.
As for the W, A, S, D issue, perhaps fullscreen wouldn't be as important if the pan was easier? I am writing this from a view of a person who likes to run too many things at once to enjoy fullsceen and who's fullscreen wouldn't work anyways.