Very nice game! Some remarks for when you will be working on the full game:
- The steering and speeding/braking is a bit too sluggish. Although it might be part of the difficulty of the game, it's also a tad too annoying :-)
- Not sure if it's deliberate, but it's pretty annoying that you can't go back. Especially when you got yourself too close to some rocks.
- The field of vision is too small, you can't look very far ahead what makes it really hard to plan your movement. It also feels very confined, making it less enjoyable.
- If a small enemy ship crashes into one of your bigger ships it feels a bit unbalanced to have it destroyed directly.
But, all in all, really great game with original gameplay!