This is a blatant, bad ripoff of another game called "Winterbells," right down to it being a bird that doubles your score while you hop up. Gameplay is completely identical; all that's changed in this is a major downgrade on graphics, controls being less responsive, and there not being music. If this doesn't qualify as copyright infringement, it should. 1/5.
The inability to advance speed+power more than three levels above health ticked me off. If I want to make your easy game harder by customizing my ship to die in one hit, please let me.