The visuals are really cool! Very simple, but with enough effects to make the game feel energetic!
The main mechanic is a "classic", but it is well implemented, with a good balance between the speed of the ship and the propulsion of the shooting. The main issue is the random aspect... Since it's unpredictable, it makes difficult sections quite unfair. I've been able to reach the fourth level (the one introducing square ennemies), but wasn't able to beat it despite several attempts. I knew it very well, but each time I tried it I just could not anticipate my actions. Or maybe the game should be less punitive to leave some rooms to errors? I don't know, but at some point I had to give up.
Not without regret though, because otherwise it controls really great, the level-design is varied & interesting, and it even procures good sensations! It's just too easy to die for dumb reasons when your ship becomes uncontrollable for no reason.^^'